ASTM B335-98

Standard Specification for Nickel-Molybdenum Alloy Rod

SCOPE
1.1 This specification  covers rod of nickel-molybdenum alloys (UNS N10001, N10665, N10675, and N10629)* as shown in Table 1, for use in general corrosive service.  
1.2 The following products are covered under this specification:  
1.2.1 Rods 5/16 to 3/4 in. (7.94 to 19.05 mm) excl in diameter, hot or cold finished, solution annealed and pickled or mechanically descaled.  
1.2.2 Rods 3/4 to 3 1/2 in. (19.05 to 88.9 mm) incl in diameter, hot or cold finished, solution annealed, ground or turned.  
1.3 The values stated in inch-pound units are to be regarded as the standard.

General Information

• Status: Historical
• Publication Date: 09-Oct-1998
• ICS: 77.150.40 - Nickel and chromium products
• Technical Committee: B02 - Nonferrous Metals and Alloys
• Drafting Committee: B02.07 - Refined Nickel and Cobalt and Their Alloys

Relations

• Replaced By: ASTM B335-03 - Standard Specification for Nickel-Molybdenum Alloy Rod
• Effective Date: 10-Jun-2003
• Referred By: ASTM B366/B366M-23 - Standard Specification for Factory-Made Wrought Nickel and Nickel Alloy Fittings
• Effective Date: 10-Oct-1998
• Referred By: ASTM B462-18e1 - Standard Specification for Forged or Rolled Nickel Alloy Pipe Flanges, Forged Fittings, and Valves and Parts for Corrosive High-Temperature Service
• Effective Date: 10-Oct-1998
• Referred By: ASTM F1511-18(2023) - Standard Specification for Mechanical Seals for Shipboard Pump Applications
• Effective Date: 10-Oct-1998

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: B 335 – 98
Standard Specification for
Nickel-Molybdenum Alloy Rod
This standard is issued under the fixed designation B 335; 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.
This standard has been approved for use by agencies of the Department of Defense.
TABLE 1 Chemical Requirements
1. Scope
Composition Limits, %
1.1 This specification covers rod of nickel-molybdenum
Element
Alloy Alloy Alloy Alloy Alloy
alloys (UNS N10001, N10665, N10675, N10629, and
N10001 N10665 N10675 N10629 N10624
N10624)* as shown in Table 1, for use in general corrosive
A A A
Nickel remainder remainder 65.0 min remainder Bal
service.
Molybdenum 26.0–30.0 26.0–30.0 27.0–32.0 26.0–30.0 21.0-25.0
1.2 The following products are covered under this specifi-
Iron 4.0–6.0 2.0 max 1.0–3.0 1.0–6.0 5.0-8.0
Chromium 1.0 max 1.0 max 1.0–3.0 0.5–1.5 6.0-10.0
cation:
5 3 Carbon, 0.05 0.02 0.01 0.01 0.01
1.2.1 Rods ⁄16to ⁄4 in. (7.94 to 19.05 mm) excl in diameter,
max
hot or cold finished, solution annealed and pickled or mechani-
Silicon, max 1.0 0.10 0.10 0.05 0.10
cally descaled. Cobalt, max 2.5 1.00 3.0 2.5 1.0
Manganese, 1.0 1.0 3.0 1.5 1.0
3 1
1.2.2 Rods ⁄4to 3 ⁄2 in. (19.05 to 88.9 mm) incl in diameter,
max
hot or cold finished, solution annealed, ground or turned.
Phosphorus, 0.04 0.04 0.030 0.04 0.025
1.3 The values stated in inch-pound units are to be regarded max
Sulfur, max 0.03 0.03 0.010 0.01 0.01
as the standard.
Vanadium 0.2–0.4 . 0.20 max . .
Nickel plus . . 94.0–98.0 .
2. Referenced Documents
Molybdenum
Aluminum . . 0.50 max 0.1–0.5 0.5
2.1 ASTM Standards:
Columbium . . 0.20 .
B 880 Specification for General Requirements for Chemical
(Nb), max
Copper, max . . 0.20 0.5 0.5
Check Analysis Limits for Nickel, Nickel Alloys and
Tantalum, . . 0.20 .
Cobalt Alloys
max
E 8 Test Methods for Tension Testing of Metallic Materials
Titanium, . . 0.20 .
max
E 29 Practice for Using Significant Digits in Test Data to
5 Tungsten, . . 3.0 .
Determine Conformance with Specifications
max
E 55 Practice for Sampling Wrought Nonferrous Metals and
Zirconium, . . 0.10 .
max
Alloys for Determination of Chemical Composition
Magnesium, . . . . .
E 354 Test Methods for Chemical Analysis of High-
max
Temperature, Electrical, Magnetic, and Other Similar Iron,
A
See 12.1
Nickel, and Cobalt Alloys
3. Terminology
3.1.1 rod—a product of round solid section furnished in
3.1 Definitions of Terms Specific to This Standard:
straight lengths.
4. Ordering Information
This specification is under the jurisdiction of ASTM Committee B-2 on
4.1 It is the responsibility of the purchaser to specify all
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
requirements that are necessary for the safe and satisfactory
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved Oct. 10, 1998. Published November 1998. Originally performance of material ordered under this specification.
published as B 335 – 58 T. Last previous edition B 335 – 95.
Examples of such requirements include, but are not limited to
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
the following:
cation SB-335 in Section II of that Code.
4.1.1 Alloy—Table 1.
* New designation established in accordance with ASTM E527 and SAE J1086,
Recommended Practice for Numbering Metals and Alloys (UNS).
4.1.2 Dimensions—Nominal diameter and length. The
Annual Book of ASTM Standards, Vol 02.04.
shortest usable multiple length shall be specified (Table 2).
Annual Book of ASTM Standards, Vol 03.01.
5 4.1.3 Certification—State if certification or a report of test
Annual Book of ASTM Standards, Vol 14.02.
Annual Book of ASTM Standards, Vol 03.05. results is required (Section 16).
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
B 335
TABLE 2 Permissible Variations in Diameter and Out-of-Roundness of Finished Rods
Permissible Variations, in. (mm)
Specified Diameter,
Diameter Out of Roundness,
in. (mm)
Plus Minus max
Hot-Finished, Annealed, and Descaled Rods
5 7
⁄16 to ⁄16 (7.94–11.11), incl 0.012 (0.30) 0.012 (0.30) 0.018 (0.46)
7 5
Over ⁄16 to ⁄8(11.11–15.87), incl 0.014 (0.36) 0.014 (0.36) 0.020 (0.51)
5 3
Over ⁄8 to ⁄4 (15.87–19.05), excl 0.016 (0.41) 0.016 (0.41) 0.024 (0.61)
Hot-Finished, Annealed, and Ground or Turned Rods
3 1
⁄4to 3 ⁄2 (19.05–88.9), incl 0.010 (0.25) 0 0.008 (0.20)
TABLE 4 Permissible Variations in Length of Rods
4.1.4 Purchaser Inspection—State which tests or inspec-
tions are to be witnessed (Section 13).
Random mill 2 to 12 ft (610 to 3660 mm) long with not more than 25
4.1.5 Samples for Product (Check) Analysis—State whether
lengths weight % under 4 ft (1.22 m).
samples shall be furnished (9.2.2). Multiple lengths Furnished in multiples of a specified unit length, within the
length limits indicated above. For each multiple, an
allowance of ⁄4 in. (6.35 mm) shall be made for cutting,
5. Chemical Composition
unless otherwise specified. At the manufacturer’s option,
5.1 The material shall conform to the composition limits individual specified unit lengths may be furnished.
Nominal lengths Specified nominal lengths having a range of not less than
specified in Table 1.
2 ft (610 mm) with no short lengths allowed.
5.2 If a product (check) analysis is made by the purchaser,
Cut lengths A specified length to which all rods shall be cut with a
permissible variation of + ⁄8in. (3.17 mm) − 0.
the material shall conform to the requirements specified in
Table 1 subject to the permissible tolerances in B 880.
7.5.2 Rods ordered to cut lengths shall be furnished with
6. Mechanical Properties and Other Requirements
square saw-cut or machined ends.
6.1 The mechanical properties of the material at room
7.6 Weight—For calculations of mass or weight, the follow-
temperature shall conform to those shown in Table 3.
ing densities shall be used:
Density
7. Dimensions and Permissible Variations
3 3
Alloy lb/in g/cm
7.1 Diameter—The permissible variations from the speci- N10001 0.334 9.24
N10665 0.333 9.22
fied diameter shall be as prescribed in Table 2.
N10675 0.333 9.22
7.2 Out of Roundness—The permissible variation in round-
N10629 0.333 9.22
ness shall be as prescribed in Table 2.
N10624 0.322 8.9
7.3 Machining Allowances—When the surfaces of finished
7.7 Straightness—The maximum curvature (depth of chord)
material are to be machined, the following allowances are
shall not exceed 0.050 in. multiplied by the length of the chord
suggested for normal machining operations.
in feet (0.04 mm multiplied by the length in centimetres).
7.3.1 As-finished (Annealed and Descaled)—For diameters
5 11 1
of ⁄16to ⁄16 in. (7.94 to 17.46 mm) incl., an allowance of ⁄16 8. Workmanship, Finish,
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