Carbon steels |
10XX |
Plain carbon, Mn 1.00% max |
11XX |
Resulfurized free machining |
|
12XX |
Resulfurized/rephosphorized free machining |
|
15XX |
Plain carbon, Mn 1.00-1.65% |
|
Manganese steel |
13XX |
Mn 1.75% |
Nickel steels |
23XX |
Ni 3.50% |
25XX |
Ni 5.00% |
|
Nickel-chromium steels |
31XX |
Ni 1.25%, Cr .65-.80% |
32XX |
Ni 1.75%, Cr 1.07% |
|
33XX |
Ni 3.50%, Cr 1.50-1.57% |
|
34XX |
Ni 3.00%, Cr .77% |
|
Molybdenum steels |
40XX |
Mo .20-.25% |
44XX |
Mo .40-.52% |
|
Chromium-molybdenum steels |
41XX |
Cr .50-.95%, Mo .12-.30% |
Nickel-chromium-molybdenum steels |
43XX |
Ni 1.82%, Cr .50-.80%, Mo .25% |
47XX |
Ni 1.05%, Cr .45%, Mo .20-.35% |
|
Nickel-molybdenum steels |
46XX |
Ni .85-1.82%, Mo .20-.25% |
48XX |
Ni 3.50%, Mo .25% |
|
Chromium steels |
50XX |
Cr .27-.65% |
51XX |
Cr .80-1.05% |
|
50XXX |
Cr .50%, C 1.00% min |
|
51XXX |
Cr 1.02%, C 1.00% min |
|
52XXX |
Cr 1.45%, C 1.00% min |
|
Chromium-vanadium steels |
61XX |
Cr .60-.95%, V .10-.15% |
Tungsten-chromium steels |
72XX |
W 1.75%, Cr .75% |
Nickel-chromium-molybdenum steels |
81XX |
Ni .30%, Cr .40%, Mo .12% |
86XX |
Ni .55%, Cr .50%, Mo .20% |
|
87XX |
Ni .55%, Cr .50%, Mo .25% |
|
88XX |
Ni .55%, Cr .50%, Mo .35% |
|
Silicon-manganese steels |
92XX |
Si 1.40-2.00%, Mn .65-.85%, Cr 0-.65% |
Nickel-chromium-molybdenum steels |
93XX |
Ni 3.25%, Cr 1.20%, Mo .12% |
94XX |
Ni .45%, Cr .40%, Mo .12% |
|
97XX |
Ni .55%, Cr .20%, Mo .20% |
|
98XX |
Ni 1.00%, Cr .80%, Mo .25% |