ASTM A710/A710M-19

Standard Specification for Precipitation–Strengthened Low-Carbon Nickel-Copper-Chromium-Molybdenum-Columbium (Niobium) Alloy Structural Steel Plates

ABSTRACT
This specification covers precipitation-strengthened low carbon nickel copper-chromium-molybdenum-columbium alloy structural steel plates. Precipitation strengthening and precipitation heat treatment shall be performed on the material to enhance and alter the required structural and mechanical properties. Heat analysis shall be used to determine the required chemical composition for carbon, manganese, phosphorus, sulfur, nickel, chromium, molybdenum, copper, columbium, and titanium. Yield strength, tensile strength, and elongation shall be evaluated using tension test and the required toughness shall be evaluated using notch toughness test.
SCOPE
1.1 This specification covers low-carbon precipitation — strengthened nickel - copper - chromium - molybdenum - columbium (niobium) alloy steel plates for general applications. The alloys in this specification are strengthened by precipitation in various temperature ranges. Precipitation strengthening can occur upon air cooling after hot rolling, during normalizing, and by another heat treatment. These grades are not intended for use in applications above 900°F [480°C].  
1.2 Two grades, each with three classes, are provided as follows:    
Grade and Class  
Condition  
Grade A, Class 1  
as-rolled and precipitation heat treated  
Grade A, Class 2  
normalized and precipitation heat treated    
Grade A, Class 3  
quenched and precipitation heat treated    
Grade B, Class 1  
as-rolled  
Grade B, Class 2  
normalized  
Grade B, Class 3  
normalized and precipitation heat treated  
1.3 Grade A provides minimum yield strength levels ranging from 50 to 85 ksi [345 to 585 MPa], depending on thickness and condition.  
1.4 Grade A, Class 1, plates are limited to a maximum thickness of 3/4 in. [20 mm]. The maximum thickness of Grade A, Classes 2 and 3, is limited only by the capacity of the composition to meet the specified mechanical property requirements; however, current practice normally limits the maximum thickness to 8 in. [200 mm].  
1.5 Mandatory notch toughness requirements are specified for Grade A, Class 1.  
1.6 Grade B provides minimum yield strength levels ranging from 70 to 75 ksi [485 to 515 MPa], depending on thickness and condition.  
1.7 Grade B plates are limited to a maximum thickness of 2 in. [50 mm].  
1.8 Mandatory notch toughness requirements are specified for the three classes of Grade B.  
1.9 When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized. See Appendix X3 of Specification A6/A6M for information on weldability.  
1.10 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.  
1.11 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Oct-2019
• ICS: 77.080.20 - Steels
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.02 - Structural Steel for Bridges, Buildings, Rolling Stock and Ships

Relations

• Replaces: ASTM A710/A710M-02(2013) - Standard Specification for Precipitation–Strengthened Low-Carbon Nickel-Copper-Chromium-Molybdenum-Columbium Alloy Structural Steel Plates
• Effective Date: 01-Nov-2019
• Refers: ASTM A6/A6M-24 - Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
• Effective Date: 01-Mar-2024
• Refers: ASTM A370-24 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 01-Mar-2024
• Refers: ASTM A6/A6M-23 - Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
• Effective Date: 01-Nov-2023
• Refers: ASTM A370-19 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 01-Jul-2019
• Refers: ASTM A370-17a - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 15-Nov-2017
• Refers: ASTM A673/A673M-17 - Standard Specification for Sampling Procedure for Impact Testing of Structural Steel
• Effective Date: 15-Nov-2017
• Refers: ASTM A6/A6M-17a - Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
• Effective Date: 01-Nov-2017
• Refers: ASTM A370-17 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 01-Jan-2017
• Refers: ASTM A6/A6M-16a - Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
• Effective Date: 15-Nov-2016
• Refers: ASTM A6/A6M-16 - Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
• Effective Date: 01-May-2016
• Refers: ASTM A370-15 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 01-Nov-2015
• Refers: ASTM A370-14 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 15-May-2014
• Refers: ASTM A6/A6M-14 - Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
• Effective Date: 01-May-2014
• Refers: ASTM A370-13 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 15-Nov-2013

Overview

ASTM A710/A710M-19 is the standard specification established by ASTM International for precipitation-strengthened low-carbon nickel-copper-chromium-molybdenum-columbium (niobium) alloy structural steel plates. This specification covers steel plates designed for general structural applications where high strength, toughness, and superior corrosion resistance are required. The enhancement of mechanical properties is achieved through controlled precipitation strengthening and precise heat treatment processes.

This standard defines two distinct grades (A and B) with three classes each, allowing for flexibility in manufacturing and the tailoring of plate characteristics to meet specific engineering requirements. The steel plates specified in ASTM A710/A710M-19 are not intended for service at temperatures above 900°F (480°C).

Key Topics

• Precipitation Strengthening: The standard requires the steel plates to undergo heat treatments that cause fine precipitates to form, significantly strengthening the material without increasing carbon content. This process ensures excellent mechanical properties, such as increased yield and tensile strength, as well as improved toughness.
• Chemical Composition: Precise limits are set for carbon, manganese, phosphorus, sulfur, nickel, chromium, molybdenum, copper, columbium (niobium), and titanium. These alloying elements contribute to the steel's corrosion resistance, mechanical strength, weldability, and durability.
• Grades and Classes:
  • Grade A: Offers minimum yield strengths from 50 to 85 ksi [345 to 585 MPa], depending on plate thickness and heat treatment.
    • Class 1: As-rolled and precipitation heat treated (thickness ≤ 3/4 in. [20 mm])
    • Class 2: Normalized and precipitation heat treated
    • Class 3: Quenched and precipitation heat treated (thickness up to 8 in. [200 mm])
  • Grade B: Provides minimum yield strengths from 70 to 75 ksi [485 to 515 MPa], suitable for plates up to 2 in. [50 mm] thick.
    • Class 1: As-rolled
    • Class 2: Normalized
    • Class 3: Normalized and precipitation heat treated
• Mechanical Properties: Mandates testing for yield strength, tensile strength, elongation, and notch toughness using recognized ASTM procedures.
• Weldability: Steel conforming to this specification is assumed to be weldable when proper procedures are followed in accordance with Appendix X3 of ASTM A6/A6M.

Applications

ASTM A710/A710M-19 provides substantial value for industries requiring structural steel plates with high strength, toughness, and corrosion resistance. The standard finds practical application in:

• Bridge construction: Enhanced strength and toughness make these steel plates ideal for critical load-bearing bridge components.
• Buildings and infrastructure: The superior mechanical properties support use in seismic zones and high-load areas in commercial and industrial buildings.
• Shipbuilding and rolling stock: Corrosion resistance and toughness are essential for ship hulls, decks, and railway vehicles.
• General structural fabrication: The alloy allows designers flexibility in manufacturing durable structures for a wide range of engineering applications.

The specification’s detailed requirements for thickness, mechanical performance, and notch toughness help ensure structural reliability and long-term service.

Related Standards

When using ASTM A710/A710M-19, consider the following related ASTM standards for comprehensive quality, testing, and application guidance:

• ASTM A6/A6M - General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
• ASTM A370 - Test Methods and Definitions for Mechanical Testing of Steel Products
• ASTM A673/A673M - Sampling Procedure for Impact Testing of Structural Steel

These referenced standards standardize testing, sampling, and requirements, supporting proper material selection and conformity across diverse structural steel applications.

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Keywords: ASTM A710, structural steel plates, precipitation strengthening, low-carbon alloy steel, nickel-copper-chromium-molybdenum-columbium, weldability, yield strength, structural applications, steel plate specification, corrosion-resistant steel, notch toughness.

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:A710/A710M −19
Standard Specification for
Precipitation–Strengthened Low-Carbon Nickel-Copper-
Chromium-Molybdenum-Columbium (Niobium) Alloy
Structural Steel Plates
This standard is issued under the fixed designationA710/A710M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 1.6 Grade B provides minimum yield strength levels rang-
ing from 70 to 75 ksi [485 to 515 MPa], depending on
1.1 This specification covers low-carbon precipitation —
thickness and condition.
strengthened nickel - copper - chromium - molybdenum -
1.7 Grade B plates are limited to a maximum thickness of 2
columbium (niobium) alloy steel plates for general applica-
in. [50 mm].
tions. The alloys in this specification are strengthened by
precipitation in various temperature ranges. Precipitation
1.8 Mandatory notch toughness requirements are specified
strengthening can occur upon air cooling after hot rolling,
for the three classes of Grade B.
during normalizing, and by another heat treatment. These
1.9 When the steel is to be welded, it is presupposed that a
grades are not intended for use in applications above 900°F
welding procedure suitable for the grade of steel and intended
[480°C].
use or service will be utilized. See Appendix X3 of Specifica-
1.2 Two grades, each with three classes, are provided as
tion A6/A6M for information on weldability.
follows:
1.10 The values stated in either inch-pound units or SI units
Grade and Class Condition
are to be regarded separately as standard. Within the text, the
SI units are shown in brackets. The values stated in each
Grade A, Class 1 as-rolled and precipitation heat treated
system are not exact equivalents; therefore, each system must
Grade A, Class 2 normalized and precipitation heat treated
Grade A, Class 3 quenched and precipitation heat treated
beusedindependentlyoftheother.Combiningvaluesfromthe
Grade B, Class 1 as-rolled
two systems may result in nonconformance with the specifi-
Grade B, Class 2 normalized
cation.
Grade B, Class 3 normalized and precipitation heat treated
1.11 This international standard was developed in accor-
1.3 Grade A provides minimum yield strength levels rang-
dance with internationally recognized principles on standard-
ing from 50 to 85 ksi [345 to 585 MPa], depending on
ization established in the Decision on Principles for the
thickness and condition.
Development of International Standards, Guides and Recom-
1.4 Grade A, Class 1, plates are limited to a maximum
mendations issued by the World Trade Organization Technical
thickness of ⁄4 in. [20 mm]. The maximum thickness of Grade
Barriers to Trade (TBT) Committee.
A, Classes 2 and 3, is limited only by the capacity of the
compositiontomeetthespecifiedmechanicalpropertyrequire-
2. Referenced Documents
ments;however,currentpracticenormallylimitsthemaximum 2
2.1 ASTM Standards:
thickness to 8 in. [200 mm].
A6/A6MSpecification for General Requirements for Rolled
Structural Steel Bars, Plates, Shapes, and Sheet Piling
1.5 Mandatory notch toughness requirements are specified
for Grade A, Class 1. A370Test Methods and Definitions for Mechanical Testing
of Steel Products
A673/A673MSpecification for Sampling Procedure for Im-
pact Testing of Structural Steel
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee
A01.02 on Structural Steel for Bridges, Buildings, Rolling Stock and Ships. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Nov. 1, 2019. Published November 2019. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1974. Last previous edition approved in 2013 as A710/A710M–02 Standards volume information, refer to the standard’s Document Summary page on
(2013). DOI: 10.1520/A0710_A0710M-19. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A710/A710M−19
3. Terminology 6.5 GradeB,Class2shallbenormalizedafterhotrollingby
reheatingto1600to1700°F[870to925°C],andthencooledin
3.1 Definitions of Terms Specific to This Standard:
still air.
3.1.1 precipitation strengthening—strengthening caused by
the precipitation of a constituent from a supersaturated solid 6.6 GradeB,Class3,shallbenormalizedat1600to1700°F
solution. [870 to 925°C], and then precipitation heat treated at 1000 to
3.1.1.1 Discussion—The Grade/Class combinations pre- 1300°F [540 to 705°C] for a time to be determined by the
sented in this specification are considered to undergo precipi- material manufacturer. One hour at a specified temperature is
tation strengthening when precipitation heat treated in accor- generally considered as a maximum.
dance with the relevant requirements of Section 6.
6.7 If the purchaser elects to perform the thermal (heat)
treatment, the material shall be accepted on the basis of mill
4. General Requirements for Delivery
tests from test coupons heat treated in accordance with the
4.1 Material furnished under this specification shall con-
purchase order requirements. If the test coupon heat treatment
form to the requirements of the current edition of Specification requirements are not indicated on the purchase order, the
A6/A6M, for the ordered material, unless a conflict exists in
manufacturer shall attach the test coupons to the product plate
which case this specification shall prevail. before it is heat treated so that the test coupons are processed
under the same conditions as the shipped product. The manu-
5. Materials and Manufacture facturershallinformthepurchaseroftheprocedurefollowedin
thermally treating the test coupons at the mill.
5.1 The steel shall be made to fine grain practice.
NOTE 1—Because of the required minimum columbium (niobium)
7. Chemical Composition
content in Table 1, all A710/A710M Grades and Classes meet fine grain
practice.Grainsizetestingisnotrequired,andaminimumrequirementfor 7.1 The heat analysis shall conform to the requirements as
any grain refining element, including aluminum, is not specified.
to chemical composition prescribed in Table 1.
7.2 The steel shall conform on product analysis to the
6. Heat Treatment
requirements prescribed in Table 1, subject to the product
6.1 Grade A, Class 1 material shall be precipitation heat
analysis tolerance in Specification A6/A6M for alloy steels.
treated in the temperature range from 1000 to 1300°F [540 to
705°C] for a time to be determined by the material manufac-
8. Tension Test
turer.
8.1 The material, as represented by the test specimens, shall
6.2 Grade A, Class 2 material shall be normalized at a
conform to the requirements specified in Table 2.
temperature in the range from 1600 to 1700°F [870 to 925°C]
8.2 Number of Tests—One tension test shall be taken from a
andthenprecipitationheattreatedatatemperatureintherange
corner of each plate as heat treated for each class of material.
from 1000 to 1300°F [540 to 705°C] for a time to be
For plates ⁄8 in. [10 mm] and under in thickness, a tension test
determined by the material manufacturer.
shall be made from a corner of each of two plates per lot.Alot
6.3 GradeA, Class 3 material shall be quenched in water or
shall consist of plates from the same heat and thickness, same
oil fro
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: A710/A710M − 02 (Reapproved 2013) A710/A710M − 19
Standard Specification for
Precipitation–Strengthened Low-Carbon Nickel-Copper-
Chromium-Molybdenum-Columbium (Niobium) Alloy
Structural Steel Plates
This standard is issued under the fixed designation A710/A710M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope Scope*
1.1 This specification covers low-carbon precipitation—strengthened precipitation — strengthened nickel - copper - chromium
- molybdenum - columbium (niobium) alloy steel plates for general applications. The alloys in this specification are strengthened
by precipitation in various temperature ranges. Precipitation strengthening can occur upon air cooling after hot rolling, during
normalizing, and by another heat treatment. These grades are not intended for use in applications above 900°F [540°C].[480°C].
1.2 Two grades, each with three classes, are provided as follows:
Grade and Class Condition
Grade and Class Condition
Grade A, Class 1 as-rolled and precipitation heat treated
Grade A, Class 2 normalized and precipitation heat treated
Grade A, Class 3 quenched and precipitation heat treated
Grade B, Class 1 as-rolled
Grade B, Class 2 normalized
Grade B, Class 3 normalized and precipitation heat treated
1.3 Grade A provides minimum yield strength levels ranging from 50 to 85 ksi [345 to 585 MPa], depending on thickness and
condition.
1.4 Grade A, Class 1, plates are limited to a maximum thickness of ⁄4 in. [20 mm]. The maximum thickness of Grade A, Classes
2 and 3, is limited only by the capacity of the composition to meet the specified mechanical property requirements; however,
current practice normally limits the maximum thickness to 8 in. [200 mm].
1.5 Mandatory notch toughness requirements are specified for Grade A, Class 1.
1.6 Grade B provides minimum yield strength levels ranging from 70 to 75 ksi [480[485 to 515 MPa], depending on thickness
and condition.
1.7 Grade B plates are limited to a maximum thickness of 2 in. [50 mm].
1.8 Mandatory notch toughness requirements are specified for the three classes of Grade B.
1.9 When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use
or service will be utilized. See Appendix X3 of Specification A6/A6M for information on weldability.
1.10 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI
units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used
independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.11 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.02
on Structural Steel for Bridges, Buildings, Rolling Stock and Ships.
Current edition approved May 15, 2013Nov. 1, 2019. Published June 2013November 2019. Originally approved in 1974. Last previous edition approved in 20072013 as
A710/A710M – 02 (2007).(2013). DOI: 10.1520/A0710_A0710M-02R13.10.1520/A0710_A0710M-19.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A710/A710M − 19
2. Referenced Documents
2.1 ASTM Standards:
A6/A6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A673/A673M Specification for Sampling Procedure for Impact Testing of Structural Steel
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
A710/A710M − 19
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 precipitation heat treatment—a sub-critical temperature thermal treatment performed to cause precipitation of submicro-
scopical constituents, etc., so as to result in enhancement of some desirable property.
3.1.1 precipitation strengthening—strengthening caused by the precipitation of submicroscopic and/or microscopic constituents
of an alloy at various temperatures, which results in the alteration of certain properties.a constituent from a supersaturated solid
solution.
3.1.1.1 Discussion—
The Grade/Class combinations presented in this specification are considered to undergo precipitation strengthening when
precipitation heat treated in accordance with the relevant requirements of Section 6.
3.1.3 soak—to hold at temperature after the material has attained the temperature throughout.
4. General Requirements for Delivery
4.1 Material furnished under this specification shall conform to the requirements of the current edition of Specification
A6/A6M, for the ordered material, unless a conflict exists in which case this specification shall prevail.
5. Materials and Manufacture
5.1 The steel shall be made to fine grain practice.
NOTE 1—Because of the required minimum columbium (niobium) content in Table 1, all A710/A710M Grades and Classes meet fine grain practice.
Grain size testing is not required, and a minimum requirement for any grain refining element, including aluminum, is not specified.
6. Heat Treatment
6.1 Grade A, Class 1 material shall be precipitation heat treated in the temperature range from 1000 to 1300°F [540 to 705°C]
for a time to be determined by the material manufacturer.
6.2 Grade A, Class 2 material shall be normalized at a temperature in the range from 1600 to 1700°F [870 to 925°C] and then
precipitation heat treated at a temperature in the range from 1000 to 1300°F [540 to 705°C] for a time to be determined by the
material manufacturer.
6.3 Grade A, Class 3 material shall be quenched in water or oil from a temperature in the range from 1600 to 1700°F [870 to
925°C] and then precipitation heat treated at a temperature in the range from 1000 to 1300°F [540 to 705°C] for a time to be
determined by the material manufacturer.
6.4 Grade B, Class 1 shall be hot-rolled.
6.5 Grade B, Class 2 shall be normalized after hot rolling by reheating to 1600 to 1700°F [870 to 925°C], and then cooled in
still air.
TABLE 1 Chemical Requirements
NOTE 1—Where an ellipsis (.) appears in the table, there is no requirement.
Composition, %
Element
Grade A Grade B
Carbon 0.07 max 0.03–0.09
Manganese 0.40–0.70 0.45–1.30
Phosphorus, max 0.025 0.025
Sulfur, max 0.025 0.025
Silicon 0.40 max 0.30–0.50
Nickel 0.70–1.00 0.80–1.00
Chromium 0.60–0.90 0.30 max
Molybdenum 0.15–0.25 0.25 max
Copper 1.00–1.30 1.25–1.50
A
Columbium (Niobium) 0.02 min 0.02–0.06
Titanium . 0.01–0.03
NOTE: Where an ellipsis (.) appears in the table, there is no requirement.
A
Columbium and niobium are interchangeable names for the same element.
A710/A710M − 19
6.6 Grade B, Class 3, shall be normalized at 1600 to 1700°F [870 to 925°C], and then precipitation heat treated at 1000 to
1300°F [540 to 705°C] for a time to be determined by the material manufacturer. One hour at a specified temperature is generally
considered as a maximum.
6.7 If the purchaser elects to perform the thermal (heat) treatment, the material shall be accepted on the basis of mill tests from
test coupons heat treated in accordance with the purchase order requirements. If the test coupon heat treatment requirements are
not indicated on the purchase order, the manufacturer shall heat treat attach the test coupons to the product plate before it is heat
treated so that the test coupons under conditions he considers appropriate. are processed under the same conditions as the shipped
product. The manufacturer shall inform the purchaser of the procedure followed in thermally treating the test coupons at the mill.
7. Chemical Co
...