|
Steel
Alloy Designation System
|
|
AISI-SAE
Designation
Number
|
Type
and Description
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Carbon steels
|
|
10xx
| Plain Carbon (Mn. 1.00%
max.)
|
|
11xx
| Resulfurized
|
|
12xx
| Resulfurized and rephosphorized
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15xx
| Plain Carbon (max. Mn.
range 1.00-1.65%)
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Manganese steels
|
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13xx
| Mn 1.75
|
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Nickel steels
|
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23xx
| Ni 3.50
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25xx
| Ni 5.00
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Nickel-chromium
steels
|
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31xx
| Ni 1.25; Cr 0.65, 0.80
|
|
32xx
| Ni 1.75; Cr 1.07
|
|
33xx
| Ni 3.50; Cr 1.50, 1.57
|
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34xx
| Ni 3.00; Cr 0.77
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|
Molybdenum
steels
|
|
40xx
| Mo 0.20, 0.25
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44xx
| Mo 0.40, 0.52
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Chromium-molybdenum
steels
|
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41xx
| Cr 0.50, 0.80, 0.95;
Mo 0.12, 0.20, 0.25, 0.30
|
|
Nickel-chromium-molybdenum
steels
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|
43xx
| Ni 1.82; Cr 0.50, 0.80;
Mo 0.25
|
|
43BVxx
| Ni 1.82; Cr 0.50; Mo
0.12, 0.25; V 0.03 min.
|
|
47xx
| Ni 1.05; Cr 0.45; Mo
0.20, 0.35
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81xx
| Ni 0.30; Cr 0.40; Mo
0.12
|
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86xx
| Ni 0.55; Cr 0.50; Mo
0.20
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87xx
| Ni 0.55; Cr 0.50; Mo
0.25
|
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88xx
| Ni 0.55; Cr 0.50; Mo
0.35
|
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93xx
| Ni 3.25; Cr 1.20; Mo
0.12
|
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94xx
| Ni 0.45; Cr 0.40; Mo
0.12
|
|
97xx
| Ni 1.00; Cr 0.20; Mo
0.20
|
|
98xx
| Ni 1.00; Cr 0.80; Mo
0.25
|
|
Nickel-molybdenum
steels
|
|
46xx
| Ni 0.85, 1.82; Mo 0.20,
0.25
|
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48xx
| Ni 3.50; Mo 0.25
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Chromium steels
|
|
50xx
| Cr 0.27, 0.40, 0.50,
0.65
|
|
51xx
| Cr 0.80, 0.87, 0.92,
0.95, 1.00, 1.05
|
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50xxx
| Cr 0.50; C 1.00 min.
|
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51xxx
| Cr 1.02; C 1.00 min.
|
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52xxx
| Cr 1.45; C 1.00 min.
|
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Chromium-vanadium
steels
|
|
61xx
| Cr 0.60, 0.80, 0.95;
V 0.10, 0.15
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Tungsten-chromium
steels
|
|
72xx
| W 1.75; Cr 0.75
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Silicon-manganese
steels
|
|
92xx
| Si 1.40, 2.00; Mn 0.65,
0.82, 0.85; Cr 0.00, 0.65
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High-strength
low-alloy steels
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|
9xx
| Various SAE grades
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Boron steels
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xxBxx
| B denotes boron steels
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Leaded steels
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xxLxx
| L denotes leaded steels
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