Tag Archives: or equivalent ASSAB 709

Steel AISI 4140/ SCM440/ VCL140

Chromoly Steel

Low Alloy Steel SCM415, SCM 435 & SCM440

 

Standard & Eguivalent

Standard Maker/ Brand
DIN JIS  AISI Assab Bohler Sanyo Thyssen Hitachi
Cr-Mo STEEL  
1.7218 SCM 415 4115 SCM415 15CrMo5 SCM415
1.7220 SCM 435 VCL SCM435 7220 SCM435
1.7225 SCM 440 4140 709 VCL 140 SCM440 7225 SCM440

 Availability
Round bar
Sizes: 10mm – 400mm
Supplied Condition: Quenched & Tempered

Features
It’s one kinds of high quality alloy structural steel.


Characteristics

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.


Chemical composition: ( % )

GRADE C Si Mn P S Cr V Mo
SCM 415 0.13-0.18 0.15-0.35 0.60-0.85 0.03 Max 0.03 Max 0.90-1.20 0.15-0.30
SCM 435 0.33-0.38 0.15-0.35 0.60-0.90 0.03 Max 0.03 Max 0.90-1.20 0.15-0.30
SCM440 0.38-0.43 0.15-0.35 0.60-0.85 0.03 Max 0.03 Max 0.90-1.20 0.15-0.30
7225 0.38-0.45 0.40 0.60-0.90 0.035 Max 0.035 Max 0.90-1.20 0.15-0.30


Mechanical Properties

Hardening Temp : 820 – 850 C
Ouenching Medium : Oil
Hardness as Supplied :

Application

It’s mainly used for making various kinds of machinery, automobile, mining spare part, the gearwheel of the engine, the driving gear of supercharger, the abckshaft, the conncetingrob and the pinchock under the high pressure. Parts for power train applications, cold formed fastener components, shafts, gears, drill collars for the oil exploration, etc.

Steel Product: