Description

alloy struction steel plate/ sheet/round bar/flat bar/coil
mould steel plate/hot rolled alloy steel plate

Grade

42CrMo/ASTM 4140/ISO 42CrMo4/JIS SCM440/DIN 42CrMo4

Chemical
Composition

C

Si

Mn

S

P

Cr

Ni

Mo

0.38-0.45

0.38-0.45

0.5-0.8

≤0.03

≤0.03

0.9-1.2

≤0.03

0.15-0.25

Standard

GB,JIS,ASTM,DIN,AISI,BS

Dimension

alloy struction steel Round bar:
diameter 50-400mm

alloy steel plate/sheet/Flat bar:
thickness12-60mm*width200-600mm

Mechanicalm
Performance

Tensile Strength 

≥1080(Mpa)

Yield Point

≥930(Mpa)

Elongation

≥12%

Heat Treatment

Quenching

850°C

Tempering

560°C

Surface Treatment

black,Coated or galvanized
No flaw,burr,rust

Inspecting

1)Chemicla analysis
2)hardness test
3)Ultrasonic test according to SEP 1921-84 3C/c
4)Dimensions micrograph of both side
5)magnaflux test
6)Charpy V-notch impact test

Delivery State

Hot rolled/forged +Rough machined (black surface after Q/T)+ Turned (optional)

Hardness

Pre-hardened HB270-300

Characteristic
Application

Commonly used for manufacturing 35CrMo higher than the required strength, large parts of the important sectional dimensions, such as axis, gear, connecting rod, transmission gears, the supercharger gear, engine cylinder, spring, spring clamps, 12-2000mm oil pipe fittings, fishing tools and instead of containing nickel steel high

Packaging 

We provide the package according to the export standard or as client's requirements.

Delivery Time

Within 30-60 days

NOTE

we can produce special specification products as per customer’s requirement