AISI SAE 4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components, like axles, shafts, bolts, gears and other applications. Similar to alloy grade AISI 4130 chrome moly alloy steel but with a slightly higher carbon content. The higher carbon content of AISI 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steels, however it does have inferior weldability characteristics.
| Standard | AISI,ASTM,JIS,DIN,EN,GB,GOST. | |
| Material |
C10,S10C,AISI1010,EN1.1121,C15,S15C,C20,S20C,AISI1020,C22, C25,S25C,C30,S30C,AISI1030,C35,S35C,AISI1035,EN1.0401,S40, S40C,AISI1040,C45,S45C,AISI1045,EN1.1191,C50,S50C,AISI1050, C55,S55C,AISI1055,EN1.1203,C60,S60C,AISI1060,20Mn,AISI1022, 25Mn,AISI1026,30Mn,AISI1033,40Mn,AISI103950Mn,AISI1053, 30Mn2,AISI1330M35Mn2,AISI1335,40Mn2,AISI1345,15Cr,AISI5115, 17Cr3,20Cr,30Cr,34Cr4,37Cr4,40Cr,AISI5140,41Cr4,EN1.7035, AISI5145,AISI5147,15CrMo,20CrMo,AISI4118,30CrMo,AISI4130, 35CrMo,AISI4135,42CrMo,AISI4140,AISI4142,42CrMo4,EN1.7225, AISI3410,30CrNi3,ST52-3,A283 Gr.A,A283 Gr.B,EN1.0035,SS400, SM400A,A283Gr.C,S235JO,EN1.0114,S235JR,EN1.0038,S235J2, EN1.0017,SS490,SS5410,A572 Gr.50,A572 Gr.60,A572 Gr.65, A572Gr.70,A572,GR.80,S355JO,SM570,E335,EN1.0060,S235J2W, Q345,Q345B,etc. |
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| Specifications | Diameter | Φ1~Φ1000mm,or as required. |
| Length | 2m,3m,5.8m,6m,8m,12m, or as required. | |
| Surface | Varnished,PE coated,galvanized. | |
Aisi 4140 round steel bar material:
| GB | ASTM/SAE/AISI | DIN | SCM | AS /NZS1444 |
| 42CrMo | Aisi 4140 / sae 4140 / astm 4140 | 42CrMo4 / 42CrMoS4 | SCM440 | AS4140 |
Aisi 4140 round steel bar composition:
| Materail | |||||||
| ASTM/SAE/AISI | C | Si | Mn | S | P | C | M |
| Aisi 4140 / sae 4140 / astm 4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | 0.035 max | 0.035 max | 0.80-1.10 | 0.80-1.10 |
Aisi 4140 round steel bar mechanical properties:
| Mechanical Properties | ||||
| Yield Strength (MPa) | Tensile Strength (MPa) | Elongation | Reduction of area | AKV (J) |
| 930 min | 1080 min | 12% min | 14% min |
63 min |
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