Standard Alloy Steels
Chemical Composition Ranges and Limits
SAE No. C Mn Cr Ni Mo Si Other
1330 .28/.33 1.60/1.90
1335 .33/.38 1.60/1.90
1340 .38/.43 1.60/1.90
4023 .20/.25 .70/.90 .20/.30
4027 .25/.30 .70/.90 .20/.30
4028* .25/.30 .70/.90 .20/.30
4037 .35/.40 .70/.90 .20/.30
4047 .45/.50 .70/.90 .20/.30
4118 .18/.23 .70/.90 .40/.60 .08/.15
4120a .18/.23 .90/1.20 .40/.60 .13/.20
4121b .18/.23 .75/1.00 .45/.65 .20/.30
4130 .28/.33 .40/.60 .80/1.10 .15/.25
4131 .28/.33 .50/.70 .90/1.20 .15/.25
4137 .35/.40 .70/.90 .80/1.10 .15/.25
4140 .38/.43 .75/1.00 .80/1.10 .15/.25
4142 .40/.45 .75/1.00 .80/1.10 .15/.25
4145 .43/.48 .75/1.00 .80/1.10 .15/.25
4147 .45/.50 .75/1.00 .80/1.10 .15/.25
4150 .48/.53 .75/1.00 .80/1.10 .15/.25
4320 .17/.22 .45/.65 .40/.60 1.65/2.00 .20/.30
4340 .38/.43 .60/.80 .70/.90 1.65/2.00 .20/.30
E4340 .38/.43 .65/.85 .70/.90 1.65/2.00 .20/.30
4620 .17/.22 .45/.65 1.65/2.00 .20/.30
4715c .13/.18 .70/.90 .45/.65 .70/1.00 .45/.65
4720 .17/.22 .50/.70 .35/.55 .90/1.20 .15/.25
4815 .13/.18 .40/.60 3.25/3.75 .20/.30
4820 .18/.23 .50/.70 3.25/3.75 .20/.30
5120 .17/.22 .70/.90 .70/.90
5130 .28/.33 .70/.90 .80/1.10
5132 .30/.35 .60/.80 .75/1.00
5140 .38/.43 .70/.90 .70/.90
5150 .48/.53 .70/.90 .70/.90
5160 .56/.64 .75/1.00 .70/.90
51100 .98/1.10 .25/.45 .90/1.15
52100 .98/1.10 .25/.45 1.30/1.60
6150 .48/.53 .70/.90 .80/1.10 .15 min
8615 .13/.18 .70/.90 .40/.60 .40/.70 .15/.25
8617 .15/.20 .70/.90 .40/.60 .40/.70 .15/.25
8620 .18/.23 .70/.90 .40/.60 .40/.70 .15/.25
8622 .20/.25 .70/.90 .40/.60 .40/.70 .15/.25
8630 .28/.33 .70/.90 .40/.60 .40/.70 .15/.25
8637 .35/.40 .75/1.00 .40/.60 .40/.70 .15/.25
8640 .38/.43 .75/1.00 .40/.60 .40/.70 .15/.25
8645 .43/.48 .75/1.00 .40/.60 .40/.70 .15/.25
8720 .18/.23 .70/.90 .40/.60 .40/.70 .20/.30
8822 .20/.25 .75/1.00 .40/.60 .40/.70 .30/.40
9259 .56/.64 .75/1.00 .45/.65 .70/1.10
9260 .56/.64 .75/1.00 1.80/2.20

NOTE: Unless specified: Si = .15/.35, P = .025 max, S = .025 max, Ni = .25 max, Cr = .20 max, Mo = .06 max.
           These standard grades can have modifications in chemistry when agreed upon by user and supplier.
* Sulfur content is .035/.050.
a Formerly PS 15.
b Formerly PS 24.
c Formerly PS 30.

Gerdau MACSTEEL Home
Profile | Capabilities | Quality | Engineered Bar Products | NitroSteel Division
Heating Treating Division | Capital Improvement | News Releases/Hot Links | Site Map | Contact Info | Metallurgical Data Book