SCM440 Alloy Steel Products Alloy Steel Rod Forged 42crmo4 Round Bar

AISI 4140/42CRMO4/SCM440 ALLOY STEEL ROUND BAR
AISI 4140 ALLOY STEEL
AISI 4140 steel is a low alloy steel containing chromium, molybdenum, and
manganese. It is widely used across numerous industries and is an excellent
material choice due to its toughness, high fatigue strength, and abrasion and
impact resistance.



CHEMICAL COMPOSITION



Element C Mn Si P S Mo
4140 0.38~0.43% 0.75~1.0% 0.15~0.30% 0.035% 0.04%
0.15~0.25%
4130 0.28~0.33% 0.70~0.90% 0.15~0.35% 0.035% 0.04%
0.15~0.25%


HEAT TREATMENT OPTION

+A: Annealed (full/soft/spheroidizing)
+N: Normalized
+NT: Normalized and tempered
+QT: Quenched and tempered (water/oil)

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