 Alloy Steel Chart
Compositions of Common Alloy Steel Grades
Maximum weight % unless a range or minimum is shown
 |
4140 |
4142 |
4145 |
4150 |
| C |
0.38-0.43 |
0.40-0.45 |
0.43-0.48 |
0.48-0.53 |
| Mn |
0.75-1.00 |
0.75-1.00 |
0.75-1.00 |
0.75-1.00 |
| div |
0.030 |
0.030 |
0.030 |
0.030 |
| S |
0.040 |
0.040 |
0.040 |
0.040 |
| Si |
0.15-0.35 |
0.15-0.35 |
0.15-0.35 |
0.15-0.35 |
| Ni |
- |
- |
- |
- |
| Cr |
0.80-1.10 |
0.80-1.10 |
0.80-1.10 |
0.80-1.10 |
| Mo |
0.15-0.25 |
0.15-0.25 |
0.15-0.25 |
0.15-0.25 |
| V |
- |
- |
- |
- |
| Cu |
- |
- |
- |
- |
| Other |
- |
- |
- |
- |
| Source |
SAE
J404 APR94 |
SAE
J404 APR94 |
SAE
J404 APR94 |
SAE
J404 APR94 |
|
4150
RES |
4320 |
4330V |
4340 |
| C |
0.48-0.53 |
0.17-0.22 |
0.28-0.33 |
0.38-0.43 |
| Mn |
0.75-1.30
(1) |
0.45-0.65 |
0.75-1.00 |
0.60-0.80 |
| div |
0.035 |
0.030 |
0.025 |
0.030 |
| S |
0.040 |
0.040 |
0.025 |
0.040 |
| Si |
0.15-0.35 |
0.15-0.35 |
0.15-0.35 |
0.15-0.35 |
| Ni |
0.25 |
1.65-2.00 |
1.65-2.00 |
1.65-2.00 |
| Cr |
0.80-1.10 |
0.40-0.60 |
0.75-1.00 |
0.70-0.90 |
| Mo |
0.15-0.25 |
0.20-0.30 |
0.35-0.50 |
0.20-0.30 |
| V |
- |
- |
0.05-0.10 |
- |
| Cu |
0.35 |
- |
0.35
max. |
- |
| Other |
- |
- |
- |
- |
| Source |
ASTM
A322-91 w/modifications |
SAE
J404 APR94 |
AMS
6427H |
SAE
J404 APR94 |
|
4350 |
4620 |
4820 |
6150 |
| C |
0.48-0.55 |
0.17-0.22 |
0.18-0.23 |
0.48-0.53 |
| Mn |
0.60-0.80 |
0.45-0.65 |
0.50-0.70 |
0.70-0.90 |
| div |
0.030 |
0.030 |
0.030 |
0.030 |
| S |
0.040 |
0.040 |
0.040 |
0.040 |
| Si |
0.15-0.35 |
0.15-0.35 |
0.15-0.35 |
0.15-0.35 |
| Ni |
1.65-2.00 |
1.65-2.00 |
3.25-3.75 |
- |
| Cr |
0.70-0.90 |
- |
- |
0.80-1.10 |
| Mo |
0.20-0.30 |
0.20-0.30 |
0.20-0.30 |
- |
| V |
- |
- |
- |
0.15
min. |
| Cu |
- |
- |
- |
- |
| Other |
- |
- |
- |
- |
| Source |
SAE
J404 APR94 w/modifications |
SAE
J404 APR94 |
SAE
J404 APR94 |
SAE
J404 APR94 |
|
8620 |
8630 |
8822 |
9310 |
| C |
0.18-0.23 |
0.28-0.33 |
0.20-0.25 |
0.07-0.13 |
| Mn |
0.70-0.90 |
0.70-0.90 |
0.75-1.00 |
0.40-0.70 |
| div |
0.030 |
0.030 |
0.030 |
0.025 |
| S |
0.040 |
0.040 |
0.040 |
0.025 |
| Si |
0.15-0.35 |
0.15-0.35 |
0.15-0.35 |
0.15-0.35 |
| Ni |
0.40-0.70 |
0.40-0.70 |
0.40-0.70 |
3.00-3.50 |
| Cr |
0.40-0.60 |
0.40-0.60 |
0.40-0.60 |
1.00-1.40 |
| Mo |
0.15-0.25 |
0.15-0.25 |
0.30-0.40 |
0.08-0.15 |
| V |
- |
- |
- |
- |
| Cu |
- |
- |
- |
0.35 |
| Other |
- |
- |
- |
B,
0.001 max. |
| Source |
SAE
J404 APR94 |
SAE
J404 APR94 |
SAE
J404 APR94 |
AMS
6260M |
|
9850 |
52100 |
EX55 |
HY80 |
| C |
0.48-0.53 |
0.98-1.10 |
0.12-0.17 |
0.12-0.18 |
| Mn |
0.70-0.90 |
0.25-0.45 |
0.70-1.00 |
0.10-0.40 |
| div |
0.040 |
0.025 |
0.025 |
0.015 |
| S |
0.040 |
0.025 |
0.025 |
0.008 |
| Si |
0.20-0.35 |
0.15-0.35 |
0.20-0.35 |
0.15-0.35 |
| Ni |
0.85-1.15 |
- |
1.65-2.00 |
2.50-3.25 |
| Cr |
0.70-0.90 |
1.30-1.60 |
0.45-0.65 |
1.35-1.80 |
| Mo |
0.20-0.30 |
- |
0.65-0.80 |
0.30-0.60 |
| V |
- |
- |
- |
0.03 |
| Cu |
- |
- |
- |
0.25 |
| Other |
- |
- |
- |
Ti,
0.02 max |
| Source |
SAE
J1249 APR94 |
SAE
J404 APR94 |
- |
MIL-S-23009C(SH) |
|
HY100 |
A182
F1 |
A182
F5 |
A182
F11 |
| C |
0.12-0.20 |
0.28 |
0.15 |
0.10-0.20
(2) |
| Mn |
0.10-0.40 |
0.60-0.90 |
0.30-0.60 |
0.30-0.80 |
| div |
0.015 |
0.045 |
0.030 |
0.040 |
| S |
0.008 |
0.045 |
0.030 |
0.040 |
| Si |
0.15-0.35 |
0.15-0.35 |
0.50 |
0.50-1.00 |
| Ni |
2.75-3.50 |
- |
0.50 |
- |
| Cr |
1.35-1.80 |
- |
4.0-6.0 |
1.00-1.50 |
| Mo |
0.30-0.60 |
0.44-0.65 |
0.44-0.65 |
0.44-0.65 |
| V |
0.03 |
- |
- |
- |
| Cu |
0.25 |
- |
- |
- |
| Other |
Ti,
0.02 max |
- |
- |
- |
| Source |
MIL-S-23009C(SH) |
ASTM
A182-98a |
ASTM
A182-98a |
ASTM
A182-98a |
|
A182
F12 |
A182
F22 |
A182
F91 |
A336
F1 |
| C |
0.10-0.20 |
0.05-0.15 |
0.08-0.12 |
0.30-0.30 |
| Mn |
0.30-0.80 |
0.30-0.60 |
0.30-0.60 |
0.60-0.80 |
| div |
0.040 |
0.040 |
0.020 |
0.025 |
| S |
0.040 |
0.040 |
0.010 |
0.025 |
| Si |
0.10-0.60 |
0.5 |
0.20-0.50 |
0.20-0.35 |
| Ni |
- |
- |
0.4 |
- |
| Cr |
0.80-1.25 |
2.00-2.50 |
8.0-9.5 |
- |
| Mo |
0.44-0.65 |
0.87-1.13 |
0.85-1.05 |
0.40-0.60 |
| V |
- |
- |
0.18-0.25 |
- |
| Cu |
- |
- |
- |
- |
| Other |
- |
- |
Cb,
0.06-0.10; N, 0.03-0.07; Al, 0.04 max. |
- |
| Source |
ASTM
A182-98a |
ASTM
A182-98a |
ASTM
A182-98a |
ASTM
A336-97 |
|
A336
F22a |
A508
Cl.2 |
A508
Cl.3 |
MIL-S-23284
Cl.1 |
| C |
0.05-0.15 |
0.27 |
0.25 |
0.28 |
| Mn |
0.30-0.60 |
0.50-1.00 |
1.20-1.50 |
0.15-0.45 |
| div |
0.025 |
0.025 |
0.025 |
0.020 |
| S |
0.025 |
0.025 |
0.025 |
0.015 |
| Si |
0.50 |
0.15-0.40 |
0.15-0.40 |
0.35 |
| Ni |
- |
0.50-1.00 |
0.40-1.00 |
2.75-3.50 |
| Cr |
2.00-2.50 |
0.25-0.45 |
0.25 |
0.50 |
| Mo |
0.90-1.10 |
0.55-0.70 |
0.45-0.60 |
0.25-0.60 |
| V |
- |
0.05 |
0.05 |
0.08 |
| Cu |
- |
- |
- |
- |
| Other |
- |
- |
- |
div+S,
0.03 max (3) |
| Source |
ASTM
A336-97 |
ASTM
A508-95 |
ASTM
A508-95 |
MIL-S-23284A(SH) |
|
MIL-S-23284
Cl.2 |
Nitralloy
"N" |
Nitralloy
135 |
| C |
0.26 |
0.22-0.27 |
0.38-0.43 |
| Mn |
0.15-0.45 |
0.50-0.70 |
0.50-0.80 |
| div |
0.020 |
0.035 |
0.025 |
| S |
0.015 |
0.040 |
0.025 |
| Si |
0.35 |
0.15-0.35 |
0.20-0.40 |
| Ni |
2.75-3.25 |
3.25-3.75 |
0.25 |
| Cr |
0.50 |
1.00-1.35 |
1.40-1.80 |
| Mo |
0.25-0.60 |
0.20-0.30 |
0.30-0.40 |
| V |
0.05 |
- |
- |
| Cu |
- |
- |
0.35 |
| Other |
div+S,
0.03 max (3) |
Al,
0.95-1.30 |
Al,
0.95-1.30 |
| Source |
MIL-S-23284A(SH) |
ASTM
A355-89 |
AMS
6470J |
(1) Several different Mn ranges are available. Contact
your Scot Forge Sales Represetative for additional information.
(2) ASTM A182 F11, Class 1 is restricted to 0.05-0.15
C and 0.30-0.60 Mn
(3) See specification for additional residual element
requirements
|
Disclaimer: Although the
information set forth herein is believed to be correct,
Scot Forge makes no recommendation, or offers no warranty
of any kind with respect to the subject matter or
its accuracy. Scot Forge specifically disclaims all
warranties, expressed, implied, or otherwise, including
without limitation, all warranties of merchantability,
fitness, or suitability for a particular purpose or
application.
|
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