• Hardox, Bisalloy, Creusabro, XAR, Quard Sumihard, Fora, Raex,JFE Everhard
  • Plat Boiler,A283Gr.C,SS400,Plat Kapal,A36,BKI,SM490,S355J
  • 3Cr12,210,304/304L,AISI 310,316/316L,403, 410,430,Durinox
  • AISI 1045,AISI 4140,AISI 4340,SCM415,SCM435,SCM440,DIN 42CrMo4,DIN 34NiCrMo6,
  • S45C,S50C,VCL140,VCN150,ASSAB,Bohler, Thyssenkrupp
  • SKD11, SKD61, SKS3, SKT4, HSS, Tungsteen Carbide
  • H-Beam,I-Beam,WF Beam,UNP,C-Channel,Besi Siku,King Cross, T-Section
  • Toko Besi,Jual Besi Baja,harga Plat dan RounBar

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Steel Round Bar SCM440 Using for Shaft and Flange

Steel Round Bar SCM440

Equivalent JIS SCM 440
Thyssen 7225, DIN 42CrMo4, ASSAB 709, VCL140, AISI 4140


Very common Quenched & Tempered alloyed engineering steel grade With high intensity, high hardenability. It has a small distortion afer quenching, a ghigh creep strength and lasting intensity afer processing of high tempreature.

It's one kinds of high quality alloy structural steel.
Hot forged steel round bars and Stabilizer, diameter from 120mm to 420mm .

Round bar
Outer Diameter: 10mm - 420mm
Length: 1000mm - 9000mm

Chemical composition: ( % )

Grade C Si Mn P S Cr Ni Cu Mo
SCM 440 0.38-0.42 0.15-0.35 0.60-0.85 0.030 max 0.035 max 0.90-1.20 0.25 max 0.25 max 0.15-0.30
AISI 4140 0.38-0.45 0.15-0.40 0.60-0.90 0.035 max 0.035 max 0.90-1.20 0.030 max 0.030 max 0.15-0.30

Mechanical Properties

Tensile Strength σb (MPa) Min 1080
Yield Strength σb (MPa) Min 930
Elongation δ5 (%)Min 12
Hardness (HB) as Supplied
Hardening Temp (C) 820-850
Impact value Akv (J)Min 63
Ouenching Medium Oil
Supplied Condition Annealed


Forging main shaft and flange for wind turbine
Forging shaft, forging ring and forging tube sheet for power generation(steam turbine, gas compressor)
Forging flange, forging tube sheet and forging pipe for petrochemical equipment(pressure vessel)
Forging shaft, forging connecting rod and forging crankshaft for shipbuilding

Related SCM440 Steel:

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