Low Alloy High Strength Steel

Description

alloy struction steel plate/ sheet/round bar/flat bar/coilmould 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

MechanicalmPerformance

Tensile Strength 

≥1080(Mpa)

Yield Point

≥930(Mpa)

Elongation

≥12%

Heat Treatment

Quenching

850°C

Tempering

560°C

Surface Treatment

black,Coated or galvanizedNo flaw,burr,rust

Inspecting

1)Chemicla analysis2)hardness test3)Ultrasonic test according to SEP 1921-84 3C/c4)Dimensions micrograph of both side5)magnaflux test6)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