ASTM B688-96

Standard Specification for Chromium-Nickel-Molybdenum-Iron (UNS N08366 and UNS N08367) Plate, Sheet, and Strip

SCOPE
1.1 This specification covers chromium-nickel-molybdenum-iron UNS N08366 and UNS N08367* plate, sheet, and strip for use in corrosive service and heat-resisting applications.  
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 31-Dec-1995
• ICS: 77.140.50 - Flat steel products and semi-products
• Technical Committee: B02 - Nonferrous Metals and Alloys
• Drafting Committee: B02.07 - Refined Nickel and Cobalt and Their Alloys

Relations

• Replaced By: ASTM B688-96(2004) - Standard Specification for Chromium-Nickel-Molybdenum-Iron (UNS N08366 and UNS N08367) Plate, Sheet, and Strip
• Effective Date: 01-May-2004
• Referred By: ASTM B366/B366M-23 - Standard Specification for Factory-Made Wrought Nickel and Nickel Alloy Fittings
• Effective Date: 01-Jan-1996
• Referred By: ASTM B906-22 - Standard Specification for General Requirements for Flat-Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip
• Effective Date: 01-Jan-1996
• Referred By: ASTM B804-02(2018) - Standard Specification for UNS N08367 and UNS N08926 Welded Pipe
• Effective Date: 01-Jan-1996

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: B 688 – 96
Standard Specification for
Chromium-Nickel-Molybdenum-Iron (UNS N08366 and UNS
N08367) Plate, Sheet, and Strip
This standard is issued under the fixed designation B 688; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.2 strip,, n—material under ⁄16 in. (5 mm) in thickness
and under 24 in. (610 mm) in width.
1.1 This specification covers chromium-nickel-
3.1.3 plate,, n—material ⁄16 in. (5 mm) and over in thick-
molybdenum-iron UNS N08366 and UNS N08367* plate,
ness and over 10 in. (254 mm) in width.
sheet, and strip for use in corrosive service and heat-resisting
applications.
4. Ordering Information
1.2 The values stated in inch-pound units are to be regarded
4.1 Orders for material under this specification shall include
as the standard. The values given in parentheses are for
the following information, as required:
information only.
4.1.1 Quantity (feet, metres, or number of pieces),
2. Referenced Documents 4.1.2 Alloy name or UNS number,
4.1.3 Finish (hot-rolled or cold-rolled),
2.1 ASTM Standards:
4.1.4 Dimensions (thickness, width, and length if cut-
E 8 Test Methods for Tension Testing of Metallic Materials
length),
E 10 Test Method for Brinell Hardness of Metallic Materi-
4.1.5 Certification, if required,
als
4.1.6 Purchaser’s inspection, if required,
E 18 Test Methods for Rockwell Hardness and Rockwell
4.1.7 ASTM designation and year of issue, and
Superficial Hardness of Metallic Materials
4.1.8 Samples for product analysis, if required.
E 29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
5. Chemical Composition
E 38 Methods for Chemical Analysis of Nickel-Chromium
4 5.1 The material shall conform to the composition limits
and Nickel-Chromium-Iron Alloys
2 specified in Table 1.
E 140 Hardness Conversion Tables for Metals
5.2 If a product (check) analysis is made by the purchaser,
E 354 Test Methods for Chemical Analysis of High-
the material shall conform to the permissible variations for
Temperature, Electrical, Magnetic, and Other Similar Iron,
5 product (check) analysis in Table 1.
Nickel, and Cobalt Alloys
6. Mechanical Properties and Other Requirements
3. Terminology
6.1 The material shall conform to the mechanical property
3.1 Definitions of Terms Specific to This Standard:
requirements specified in Table 2.
3.1.1 sheet,, n—material under ⁄16 in. (5 mm) in thickness
and 24 in. (610 mm) and over in width.
7. Dimensions and Permissible Variations
7.1 Sheet—Material shall conform to the variations speci-
This specification is under the jurisdiction of ASTM Committee B-2 on fied in Tables 3-9, inclusive. There will be no flatness require-
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
ments for non-stretcher leveled sheet.
B02.07 on Refined Nickel and Cobalt, and Alloys Containing Nickel or Cobalt or
7.2 Strip—Material shall conform to the variations specified
Both as Principal Constituents.
in Tables 10-13, inclusive. Note that strip of all sizes may be
Current edition approved May 10, 1996. Published June 1996. Originally
published as B 688 – 81. Last previous edition B 688 – 95.
ordered to cut lengths in which case a variation of ⁄2 in. (13
* New designation established in accordance with ASTM E 527 and SAE J1086,
mm) over the specified length shall be permitted. There shall be
Practice for Numbering Metals and Alloys (UNS).
2 no flatness requirements for non-stretcher leveled strip.
Annual Book of ASTM Standards, Vol 03.01.
Annual Book of ASTM Standards, Vol 14.02.
Discontinued—See 1989 Annual Book of ASTM Standards, Vol 03.05.
Annual Book of ASTM Standards, Vol 03.05.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
B688–96
TABLE 1 Chemical Requirements TABLE 4 Permissible Variations in Width and Length
for Hot-Rolled and Cold-Rolled Resquared Sheets
Composition Limits, % Product (Check)
(Stretcher Leveled Standard of Flatness)
Analysis Varia-
tions, under min
Tolerances
Element or over max, of
N08366 N08367 Specified Dimensions, in. (mm) Plus
the Specified
Minus
Limit of Ele-
in. mm
ment, %
For thickness under 0.131 (3.33):
Carbon 0.035 max 0.030 max 0.005
Widths up to 48 (1219) excl ⁄16 20
Manganese 2.00 max 2.00 max 0.04
Widths 48 (1219) and over ⁄8 30
Silicon 1.00 max 1.00 max 0.05
Lengths up to 120 (3048) excl ⁄16 20
Phosphorus 0.040 max 0.040 max 0.005
Lengths 120 (3048) and over ⁄8 30
Sulfur 0.030 max 0.030 max 0.005
For thicknesses 0.131 (3.33) and over:
Chromium 20.00 to 22.00 20.00 to 22.00 0.25 1
All widths and lengths ⁄4 60
Nickel 23.50 to 25.50 23.50 to 25.50 0.20
Molybdenum 6.00 to 7.00 6.00 to 7.00 0.15
Nitrogen . 0.18 to 0.25 0.01
A
Iron remainder remainder . TABLE 5 Permissible Variations in Width for Hot-Rolled and
Copper . 0.75 max 0.04
Cold-Rolled Sheets not Resquared and Cold-Rolled Coils
A
Iron shall be determined arithmetically by difference.
Tolerances for Specified
Specified Thickness, in. Width, in. (mm)
(mm) 24 (610) to 48 48 (1219) and
TABLE 2 Mechanical Properties for Plate, Sheet, and Strip
(1219), excl Over
3 1 1
N08366 N08367 Less than ⁄16 (4.76) ⁄16 (2) plus ⁄8 (3) plus
0 minus 0 minus
Yield strength, 0.2 % offset, min, ksi 35 (240) 45 (310)
(MPa)
Tensile strength, min, ksi (MPa)
# ⁄16 in. (4.8 mm) thick 75 (515) 100 (690)
TABLE 6 Permissible Variations in Camber for Hot-Rolled
3 A
> ⁄16 75 (515) 95 (655)
and Cold-Rolled Sheets Not Required and Cold-Rolled Coils
A A
Elongation in 2 in. or 50 mm or 4D, 30 30
Tolerance per
min, %
B
Unit Length of
Hardness, max
Specified Width, in. (mm)
3 Any 8 ft (2438 mm),
# ⁄16 in. (4.8 mm) thick 95 HRB 100 HRB
3 in. (mm)
> ⁄16 212 HBN 240 HBN
24 (610) to 36 (914), incl ⁄8 (3)
A
Not applicable for thickness under 0.015 in. (0.40 mm). 1
Over 36 (914) ⁄16 (2)
B
Hardness values (Brinell, Rockwell, or equivalent) are informative only and are
A
Camber is the greatest deviation of a side edge from a straight line and
not to be construed as the basis for acceptance or rejection.
measurement is taken by placing an 8-ft (2438-mm) straightedge on the concave
side and measuring the greatest distance between the sheet edge and the
TABLE 3 Permissible Variations in Thickness for Hot- straightedge.
Rolled Sheets in Cut Lengths, Cold-Rolled Sheets in Cut
Lengths and Coils
TABLE 7 Permissible Variations in Length for Hot-
Permissible
Rolled and Cold-Rolled Sheets Not Resquared
Variations, Plus
A
Length, ft (mm) Tolerances, in. (mm)
Specified Thickness, in. (mm)
and Minus
Up to 10 (3048), incl ⁄4 (6) plus 0 minus
in. mm
Over 10 (3048) to 20 (6096), incl ⁄2 (13) plus 0 minus
Over 0.145 (3.68) to less than ⁄16 (4.76) 0.014 0.36
Over 0.130 (3.30) to 0.145 (3.68), incl 0.012 0.30
Over 0.114 (2.90) to 0.130 (3.30), incl 0.010 0.25
Over 0.098 (2.49) to 0.114 (2.90), incl 0.009 0.23
9. Sampling
Over 0.083 (2.11) to 0.098 (2.49), incl 0.008 0.20
Over 0.072 (1.83) to 0.083 (2.11), incl 0.007 0.18
9.1 Lot for Chemical Analysis and Mechanical Testing:
Over 0.058 (1.47) to 0.072 (1.83), incl 0.006 0.15
Over 0.040 (1.02) to 0.058 (1.47), incl 0.005 0.13 9.1.1 A lot for chemical analysis shall consist of one heat.
Over 0.026 (0.66) to 0.040 (1.02), incl 0.004 0.10
9.1.2 Lots for mechanical testing shall consist of the mate-
Over 0.016 (0.41) to 0.026 (0.66), incl 0.003 0.08
rial from one heat, in the same condition, and of the same
Over 0.007 (0.18) to 0.016 (0.41), incl 0.002 0.05
Over 0.005 (0.13) to 0.007 (0.18), incl 0.0015 0.04
nominal thickness.
0.005 (0.13) 0.001 0.03
9.2 Test Material Selection:
A
Thickness measurements are taken at least ⁄8 in. (9.52 mm) from the edge of
9.2.1 Chemical Analysis:
the sheet.
9.2.1.1 An analysis of each lot shall be made by the
manufacturer from a representative sample obtained during the
7.3 Plate—Material shall conform to the variations speci-
pouring of the heat or subsequent processing.
fied in Tables 14-20, inclusive. Specially flattened plate, when
9.2.1.2 If samples for product (check) analysis are specified,
so specified, shall have permissible variations in flatness as
a representative sample shall be taken from each lot (see 9.1.1)
agreed upon between the manufacturer andpurchaser.
of finished material.
8. Workmanship, Finish, and Appearance
9.2.2 Sampling for Mechanical Properties—Samples of the
8.1 The material shall be uniform in quality and condition, material to provide test specimens for mechanical testing shall
smooth, commercially straight or flat, and free of injurious be taken from such locations in each lot (see 9.1.2) as to be
imperfections. representative of that lot.
B688–96
TABLE 8 Permissible Variations in Flatness for Hot-Rolled and Cold-Rolled Sheets Specified to Stretcher-Leveled
Standard of Flatness
A
Specified Thickness, in. (mm) Width, in. (mm) Length, in. (mm) Flatness Tolerance, in. (mm)
3 1
Under ⁄16 (4.76) to 48 (1219), incl to 96 (2438), incl ⁄8 (3)
3 1
Under ⁄16 (4.76) to 48 (1219), incl over 96 (2438) ⁄4 (6)
3 1
Under ⁄16 (4.76) over 48 (1219) to 96 (2438), incl ⁄4 (6)
3 1
Under ⁄16 (4.76) over 48 (1219) over 96 (2438) ⁄4 (6)
TABLE 9 Permissible Variations in Diameter for Hot-Rolled and Cold-Rolled Sheets, Sheared Circles
Tolerance Over Specified Diameter (No Tolerance Under), in.
(mm)
Specified Thickness, in. (mm)
Diameters Under 30 Diameters 30 (762) Diameters Over 48
in. (762) to 48 in. (1219) in. (1219)
1 3 1
0.0972 (2.46) and thicker ⁄8 (3) ⁄16 (5) ⁄4 (6)
3 5 7
0.0971 (2.46) to 0.0568 (1.45), incl ⁄32 (2) ⁄32 (4) ⁄32 (6)
1 1 3
0.0567 (1.45) and thinner ⁄16 (2) ⁄8 (3) ⁄16 (5)
TABLE 10 Permissible Variations in Thickness for Cold-Rolled Strip in Coils and Cut Lengths
NOTE 1— Thickness measurements are taken at least ⁄8 in. (9.52 mm) in from the edge of the strip, except that on widths less than 1 in. (25.4 mm),
the tolerances are applicable for measurements at all locations. The tolerances in this table include crown tolerances.
Thickness Tolerances, for the Thickness and Widths Given, Plus and Minus, in. (mm)
Width, in. (mm)
Specified Thickness, in. (mm) 3
⁄16 (4.76) to 6 (152), Over 6 (152) to 12 Over 12 (305) to 24
incl (305), incl (610), excl
A
Thickness Tolerances
0.005 (0.13) to 0.010 (0.25), incl 10 % 10 % 10 %
Over 0.010 (0.25) to 0.011 (0.28), incl 0.0015 (0.04) 0.0015 (0.04) 0.0015 (0.04)
Over 0.011 (0.28) to 0.013 (0.33), incl 0.0015 (0.04) 0.0015 (0.04) 0.002 (0.05)
Over 0.013 (0.33) to 0.017 (0.43), incl 0.0015 (0.04) 0.002 (0.05) 0.002 (0.05)
Over 0.017 (0.43) to 0.020 (0.51), incl 0.0015 (0.04) 0.002 (0.05) 0.0025 (0.06)
Over 0.020 (0.51) to 0.029 (0.74), incl 0.002 (0.05) 0.0025 (0.06) 0.0025 (0.06)
Over 0.029 (0.74) to 0.035 (0.89), incl 0.002 (0.05) 0.003 (0.08) 0.003 (0.08)
Over 0.035 (0.89) to 0.050 (1.27), incl 0.0025 (0.06) 0.0035 (0.09) 0.0035 (0.09)
Over 0.050 (1.27) to 0.069 (1.75), incl 0.003 (0.08) 0.0035 (0.09) 0.0035 (0.09)
Over 0.069 (1.75) to 0.100 (2.54), incl 0.003 (0.08) 0.004 (0.10) 0.005 (0.13)
Over 0.100 (2.54) to 0.125 (2.98), incl 0.004 (0.10) 0.0045 (0.11) 0.005 (0.13)
Over 0.125 (2.98) to 0.161 (4.09), incl 0.0045 (0.11) 0.0045 (0.11) 0.005 (0.13)
Over 0.161 (4.09) to under ⁄16 (4.76) 0.005 (0.13) 0.005 (0.13) 0.006 (0.15)
A
Thickness tolerances given in in. (mm) unless otherwise indicated.
TABLE 11 Permissible Variations in Width for Cold-Rolled Strip in Coils and Cut Lengths for Edge Nos. 1 and 5
Width Tolerance for Thickness
Specified Edge
and Width Given, in. (mm)
Width, in. (mm) Thickness, in. (mm)
No.
Plus Minus
3 1
1 and 5 ⁄32 (7.14) and under ⁄16 (1.59) and under 0.005 (0.13) 0.005 (0.13)
3 3 3
1 and 5 over ⁄32 (7.14) to ⁄4 (19.05), incl ⁄32 (2.38) and under 0.005 (0.13) 0.005 (0.13)
3 1
1 and 5 over ⁄4 (19.05) to 5 (127), incl ⁄8 (3.18) and under 0.005 (0.13) 0.005 (0.13)
5 over 5 (127.00) to 9 (228.60), incl ⁄8 (3.18) to 0.008 (0.20), incl 0.010 (0.25) 0.010 (0.25)
5 over 9 (228.60) to 20 (508.00), incl 0.105 (2.67) to 0.015 (0.38) 0.010 (0.25) 0.010 (0.25)
5 over 20 (508.00) 0.080 (2.03) to 0.023 (0.58) 0.015 (0.38) 0.015 (0.38)
10. Number of Tests 11. Specimen Preparation
10.1 Chemical Analysis—One test per lot.
11.1 Tension test specimens shall be taken from material in
10.2 Mechanical Tests—One test per lot.
the final condition and tested transverse to the direction of
10.3 Retests—If the specimen used in the mechanical test of
rolling when width permits.
any lot fails to meet the specified requirements, two additional
11.2 Tension test specimens shall be any of the standard or
specimens shall be taken from different sample pieces and
sub-size specimens shown in Test Methods E 8. The largest
tested. The results of the tests on both of these specimens shall
possible size specimen of Test Methods E 8 shall be used.
meet the specified requirements.
B688–96
TABLE 12 Permissible Variations in Width for Cold-Rolled Strip in Coils and Cut Lengths for Edge No. 3
Width Tolerance, Plus and Minus for Thickness and Width Given, in. (mm)
Over 9 Over 12 Over 20
1 1
Under ⁄2 ⁄2 (12.70) Over 6
(228.60) to (304.80) to (508.00) to
Specified Thickness, in. (mm)
(12.70) to to 6 (152.40) to
12 20 24
⁄16 (4.76), (152.40), 9 (228.60),
(304.80), (508.00), (609.60),
incl incl incl
incl incl incl
Under ⁄16 (4.76) to 0.161 (4.09), incl . 0.016 0.020 0.020 0.031 0.031
(0.41) (0.51) (0.51) (0.79) (0.79)
0.160 (4.06) to 0.100 (2.54), incl 0.010 0.010 0.016 0.016 0.020 0.020
(0.25) (0.25) (0.41) (0.41) (0.51) (0.51)
0.099 (2.51) to 0.069 (1.75), incl 0.008 0.008 0.010 0.010 0.016 0.020
(0.20) (0.20) (0.25) (0.25) (0.41) (0.51)
0.068 (1.73) and under 0.005 0.005 0.005 0.010 0.016 0.020
(0.13) (0.13) (0.13) (0.25) (0.41) (0.51)
TABLE 13 Permissible Variations in Camber for Cold-
Requirements rounded unit for observed or
A
Rolled Strip in Coils and Cut Lengths
calculated value
Chemical composition nearest unit in the last right-
Tolerance
hand place of figures of the
per Unit
specified limit
Length of
Specified Width, in. (mm)
Tensile strength and yield nearest 1000 psi (7 MPa)
Any8ft
strength
(2438 mm),
Elongation nearest 1 %
in. (mm)
A
Brinell hardness tabular value
1 1
To 1 ⁄2 (38.10), incl ⁄2 (13)
1 1 Rockwell hardness 1 Rockwell number
Over 1 ⁄2 (38.10) to 24 (609.60), excl ⁄4 (6)
A
Round the mean diameter of the Brinell impression to the nearest 0.05 mm and
A
Camber is the deviation of a side edge from a straight line and measurement
report the corresponding hardness
...