Table 5. Compositions of AISI-SAE Standard Low-Alloy Steels Table 5. (Continued) Compositions of AISI-SAE Standard Low-Alloy Steels
Composition (%) a , b
AISI-SAE No. E51100 c E52100 c
UNS No. G51986 G52986 G61180 G61500 G86150 G86170 G86200 G86220 G86250 G86270 G86300 G86370 G86400 G86420 G86450 G86550 G87200 G87400 G88220 G92600 G50441 G50461 G50501 G50601 G51601 G81451 G94171 G94301
C
Mn
P (max) 0.025 0.025 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035
S (max) 0.025 0.025 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040
Si
Ni … … … …
Cr
Mo … …
0.98-1.10 0.98-1.10 0.16-0.21 0.48-0.53 0.13-0.18 0.15-0.20 0.18-0.23 0.20-0.25 0.23-0.28 0.25-0.30 0.28-0.33 0.35-0.40 0.38-0.43 0.40-0.45 0.43-0.48 0.51-0.59 0.18-0.23 0.38-0.43 0.20-0.25 0.56-0.64 0.43-0.48 0.44-0.49 0.48-0.53 0.56-0.64 0.56-0.64 0.43-0.48 0.15-0.20 0.28-0.33
0.25-0.45 0.25-0.45 0.50-0.70 0.70-0.90 0.70-0.90 0.70-0.90 0.70-0.90 0.70-0.90 0.70-0.90 0.70-0.90 0.70-0.90 0.75-1.00 0.75-1.00 0.75-1.00 0.75-1.00 0.75-1.00 0.70-0.90 0.75-1.00 0.75-1.00 0.75-1.00 0.75-1.00 0.75-1.00 0.75-1.00 0.75-1.00 0.75-1.00 0.75-1.00 0.75-1.00 0.75-1.00
0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 1.80-2.20 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35
0.90-1.15 1.30-1.60 0.50-0.70 0.80-1.10 0.40-0.60 0.40-0.60 0.40-0.60 0.40-0.60 0.40-0.60 0.40-0.60 0.40-0.60 0.40-0.60 0.40-0.60 0.40-0.60 0.40-0.60 0.40-0.60 0.40-0.60 0.40-0.60 0.40-0.60 0.40-0.60 0.20-0.35 0.40-0.60 0.40-0.60 0.70-0.90 0.35-0.55 0.30-0.50 0.30-0.50 …
6118 6150 8615 8617 8620 8622 8625 8627 8630 8637 8640 8642 8645 8655 8720 8740 8822 9260
0.10-0.15 V 0.15 V min 0.15-0.25 0.15-0.25 0.15-0.25 0.15-0.25 0.15-0.25 0.15-0.25 0.15-0.25 0.15-0.25 0.15-0.25 0.15-0.25 0.15-0.25 0.15-0.25 0.20-0.30 0.20-0.30 0.30-0.40
0.40-0.70 0.40-0.70 0.40-0.70 0.40-0.70 0.40-0.70 0.40-0.70 0.40-0.70 0.40-0.70 0.40-0.70 0.40-0.70 0.40-0.70 0.40-0.70 0.40-0.70 0.40-0.70 0.40-0.70
0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040
…
…
Standard Boron Grades d
50B44 50B46 50B50 50B60 51B60 81B45 94B17 94B30
… … … … …
… … … … …
0.20-0.40 0.30-0.60 0.30-0.60
0.08-0.15 0.08-0.15
0.08-0.15 a Small quantities of certain elements are present that are not specified or required. These incidental elements may be present to the following maximum amounts: Cu, 0.35 percent; Ni, 0.25 percent; Cr, 0.20 percent; and Mo, 0.06 percent. b Standard alloy steels can also be produced with a lead range of 0.15-0.35 percent. Such steels are identified by inserting the letter “L” between the second and third numerals of the AISI or SAE number, e.g., 41L40. c Electric furnace steel. d 0.0005-0.003 percent B. Source: American Iron and Steel Institute: Steel Products Manual.
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