ASTM A322-91(2001)e1

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Designation: A 322 – 91 (Reapproved 2001)
Standard Specification for
Steel Bars, Alloy, Standard Grades
This standard is issued under the fixed designation A 322; 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.
e NOTE—A correction was made to Table 1 in May 2004.
1. Scope E 527 Practice for Numbering Metals and Alloys (UNS)
1.1 This specification covers hot-wrought alloy steel bars.
3. Ordering Information
Bar applications include forging, heat treating, cold drawing,
3.1 Orders under this specification should include the fol-
machining and many structural components (Note 1).
lowing as required to describe adequately the desired material:
NOTE 1—Aguide for the selection of steel bars is contained in Practice
3.1.1 Quantity (weight or number of bars),
A 400.
3.1.2 Name of material (hot-wrought alloy steel bars),
1.2 The bars shall be furnished in the grades specified in
3.1.3 Dimensions,
Table 1. Sections and sizes of bar steel available are covered in
3.1.4 ASTM designation,
Specification A 29/A 29M. Hot-wrought alloy steel bars are
3.1.5 Deoxidation practice (see 5.3),
produced in cut lengths and coils; the manufacturer should be
3.1.6 Gradedesignationorchemicalcompositionlimits(see
consulted regarding sections and sizes available in coils,
6.1 and Table 1),
produced to a chemical composition.
3.1.7 Grain size if required,
1.3 Some applications may require superior surface quality,
3.1.8 Test reports, if required (Section 8),
or special chemical restrictions, metallurgical characteristics,
3.1.9 Additions to the specification and Supplementary
heat treatment, or surface finishes which the purchaser may
Requirements, if required, and
obtain by designating one or more of the available Supplemen-
3.1.10 Application.
tary Requirements.
4. General Requirements
1.4 The values stated in inch-pound units are to be regarded
as the standard. 4.1 Material furnished under this specification shall con-
form to the applicable requirements of the current edition of
2. Referenced Documents
Specification A 29/A 29M, unless otherwise provided herein.
2.1 ASTM Standards:
5. Materials and Manufacture
A 29/A 29M SpecificationforSteelBars,CarbonandAlloy,
Hot-Wrought and Cold-Finished, General Requirements
5.1 The steel shall be made by one or more of the following
for primary processes: open-hearth, basic-oxygen, or electric-
A 304 Specification for Steel Bars, Alloy, Subject to End-
furnace. The primary melting may incorporate separate degas-
Quench Hardenability Requirements sing or refining and may be followed by secondary melting
A 400 Practice for Steel Bars, Selection Guide, Composi-
using electro-slag remelting or vacuum arc remelting. Where
tion, and Mechanical Properties secondary melting is employed, the heat shall be defined as all
E 112 Test Methods for Determining Average Grain Size
of the ingots remelted from a single primary heat.
E 381 Method of MacroetchTesting, Inspection, and Rating 5.2 The steel shall be furnished as strand cast or ingot cast,
Steel Products, Comprising Bars, Billets, Blooms, and
unless otherwise specified.
Forgings 5.3 Deoxidation—Killed steel is required.
5.3.1 The purchaser may designate that the steel be made to
coarse or fine austenitic grain size. (See Supplementary Re-
quirement S9 or S10.)
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee 5.4 Slow Cooling—Immediately after hot forming, the bars
A01.15 on Bars.
shall be allowed to cool to a temperature below the critical
Current edition approved Aug. 15, 1991. Published October 1991. Originally
published as A 322 – 47 T. Last previous edition A 322 – 90b.
Annual Book of ASTM Standards, Vol 01.05.
3 4
Annual Book of ASTM Standards, Vol 03.01. Annual Book of ASTM Standards, Vol 01.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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A 322 – 91 (2001)
range under suitable conditions to prevent imperfections 6. Chemical Composition
caused by too rapid cooling.
6.1 The heat analysis shall conform to the requirements for
5.5 ThermalTreatment—Variousthermaltreatmentssuchas
chemical composition in Table 1 for the grade specified.
annealing, stress relief, quench and temper, normalize, etc., are
available. Such treatments must be specified as a Supplemen-
tary Requirement.
A,B
TABLE 1 Grade Designations and Chemical Compositions of Hot-Wrought Alloy Steel Bars
D
UNS Grade Chemical Composition, Ranges and Limits, %
C
Designation Designations
E F
Carbon Manganese Phospho- Sulfur, Silicon Nickel Chromium Molybdenum
rus, max max
G13300 1330 0.28–0.33 1.60–1.90 0.035 0.040 0.15–0.35 . . .
G13350 1335 0.33–0.38 1.60–1.90 0.035 0.040 0.15–0.35 . . .
G13400 1340 0.38–0.43 1.60–1.90 0.035 0.040 0.15–0.35 . . .
G13450 1345 0.43–0.48 1.60–1.90 0.035 0.040 0.15–0.35 . . .
G40230 4023 0.20–0.25 0.70–0.90 0.035 0.040 0.15–0.35 . . 0.20–0.30
G40240 4024 0.20–0.25 0.70–0.90 0.035 0.035– 0.15–0.35 . . 0.20–0.30
0.050
G40270 4027 0.25–0.30 0.70–0.90 0.035 0.040 0.15–0.35 . . 0.20–0.30
G40280 4028 0.25–0.30 0.70–0.90 0.035 0.035– 0.15–0.35 . . 0.20–0.30
0.050
G40370 4037 0.35–0.40 0.70–0.90 0.035 0.040 0.15–0.35 . . 0.20–0.30
G40470 4047 0.45–0.50 0.70–0.90 0.035 0.040 0.15–0.35 . . 0.20–0.30
G41180 4118 0.18–0.23 0.70–0.90 0.035 0.040 0.15–0.35 . 0.40–0.60 0.08–0.15
G41200 0.18–0.23 0.90–1.20 0.035 0.040 0.15–0.35 . 0.40–0.60 0.13–0.20
G41210 0.18–0.23 0.75–1.00 0.035 0.040 0.15–0.35 . 0.45–0.65 0.20–0.30
G41300 4130 0.28–0.33 0.40–0.60 0.035 0.040 0.15–0.35 . 0.80–1.10 0.15–0.25
G41370 4137 0.35–0.40 0.70–0.90 0.035 0.040 0.15–0.35 . 0.80–1.10 0.15–0.25
G41400 4140 0.38–0.43 0.75–1.00 0.035 0.040 0.15–0.35 . 0.80–1.10 0.15–0.25
G41420 4142 0.40–0.45 0.75–1.00 0.035 0.040 0.15–0.35 . 0.80–1.10 0.15–0.25
G41450 4145 0.43–0.48 0.75–1.00 0.035 0.040 0.15–0.35 . 0.80–1.10 0.15–0.25
G41470 4147 0.45–0.50 0.75–1.00 0.035 0.040 0.15–0.35 . 0.80–1.10 0.15–0.25
G41500 4150 0.48–0.53 0.75–1.00 0.035 0.040 0.15–0.35 . 0.80–1.10 0.15–0.25
G41610 4161 0.56–0.64 0.75–1.00 0.035 0.040 0.15–0.35 . 0.70–0.90 0.25–0.35
G43200 4320 0.17–0.22 0.45–0.65 0.035 0.040 0.15–0.35 1.65–2.00 0.40–0.60 0.20–0.30
G43400 4340 0.38–0.43 0.60–0.80 0.035 0.040 0.15–0.35 1.65–2.00 0.70–0.90 0.20–0.30
G43406 E4340 0.38–0.43 0.65–0.85 0.025 0.025 0.15–0.35 1.65–2.00 0.70–0.90 0.20–0.30
G46150 4615 0.13–0.18 0.45–0.65 0.035 0.040 0.15–0.35 1.65–2.00 . 0.20–0.30
G46200 4620 0.17–0.22 0.45–0.65 0.035 0.040 0.15–0.35 1.65–2.00 . 0.20–0.30
G46210 4621 0.18–0.23 0.70–0.90 0.035 0.040 0.15–0.35 1.65–2.00 . 0.20–0.30
G46260 4626 0.24–0.29 0.45–0.65 0.035 0.040 0.15–0.35 0.70–1.00 . 0.15–0.25
G47150 0.13–0.18 0.70–0.90 0.035 0.040 0.15–0.35 0.70–1.00 0.45–0.65 0.45–0.60
G47200 4720 0.17–0.22 0.50–0.70 0.035 0.040 0.15–0.35 0.90–1.20 0.35–0.55 0.15–0.25
G48150 4815 0.13–0.18 0.40–0.60 0.035 0.040 0.15–0.35 3.25–3.75 . 0.20–0.30
G48170 4817 0.13–0.20 0.40–0.60 0.035 0.040 0.15–0.35 3.25–3.75 . 0.20–0.30
G48200 4820 0.18–0.23 0.50–0.70 0.035 0.040 0.15–0.35 3.25–3.75 . 0.20–0.30
G51170 5117 0.15–0.20 0.70–0.90 0.035 0.040 0.15–0.35 . 0.70–0.90 .
G51200 5120 0.17–0.22 0.70–0.90 0.035 0.040 0.15–0.35 . 0.70–0.90 .
G51300 5130 0.28–0.33 0.70–0.90 0.035 0.040 0.15–0.35 . 0.80–1.10 .
G51320 5132 0.30–0.35 0.60–0.80 0.035 0.040 0.15–0.35 . 0.75–1.00 .
G51350 5135 0.33–0.38 0.60–0.80 0.035 0.040 0.15–0.35 . 0.80–1.05 .
G51400 5140 0.38–0.43 0.70–0.90 0.035 0.040 0.15–0.35 . 0.70–0.90 .
G51500 5150 0.48–0.53 0.70–0.90 0.035 0.040 0.15–0.35 . 0.70–0.90 .
G51550 5155 0.51–0.59 0.70–0.90 0.035 0.040 0.15–0.35 . 0.70–0.90 .
G51600 5160 0.56–0.64 0.75–1.00 0.035 0.040 0.15–0.35 . 0.70–0.90 .
G51986 E51100 0.98–1.10 0.25–0.45 0.025 0.025 0.15–0.35 . 0.90–1.15 .
G52986 E52100 0.98–1.10 0.25–0.45 0.025 0.025 0.15–0.35 . 1.30–1.60 .
Vanadium
G61180 6118 0.16–0.21 0.50–0.70 0.035 0.040 0.15–0.35 . 0.50–0.70 0.10–0.15
G61500 6150 0.48–0.53 0.70–0.90 0.035 0.040 0.15–0.35 . 0.80–1.10 0.15 min
Molybdenum
G86150 8615 0.13–0.18 0.70–0.90 0.035 0.04 0.15–0.35 0.40–0.70 0.40–0.60 0.15–0.25
G86170 8617 0.15–0.20 0.70–0.90 0.035 0.040 0.15–0.35 0.40–0.70 0.40–0.60 0.15–0.25
G86200 8620 0.18–0.23 0.70–0.90 0.035 0.04 0.15–0.35 0.40–0.70 0.40–0.60 0.15–0.25
G86220 8622 0.20–0.25 0.70–0.90 0.035 0.040 0.15–0.35 0.40–0.70 0.40–0.60 0.15–0.25
G86250 8625 0.23–0.28 0.70–0.90 0.035 0.040 0.15–0.35 0.40–0.70 0.40–0.60 0.15–0.25
G86270 8627 0.25–0.30 0.70–0.90 0.035 0.040 0.15–0.35 0.40–0.70 0.40–0
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