Round bar

Diameter(mm)

Length (mm)

20~800

3000~9000

Plate

Thickness(mm) 

Width (mm)  

Length (mm)   

Max:800

Max:2200

Max:9000

The specification can be customized.

 2,Chemical Compositons

Grade

C

Si

Mn

P

S

Cr

Mo

Ni

42CrMo

0.38~0.45

0.17~0.37

0.50~0.8

≤0.035

≤0.035

0.9~1.2

0.15-0.25

≤0.3

4140

0.40~0.45

0.15~0.35

0.75~1.0

≤0.035

≤0.040

0.8~1.1

0.15-0.25

-

SCM44

0.38~0.43

0.15~0.35

0.60~0.9

≤0.030

≤0.030

0.9~1.2

0.15-0.30

0.15-0.30

3,Features of 4140 Steel Round Bar

1, Chromium molybdenum alloy steel 

2, Slightly higher carbon content then 4130

3, Greater strength and heat treatment 

4,Typical Applications 

1, Applications in the oil and gas sector

2, Connection rods, collets, conveyor pins, 

3, Gears, stem assemblies, 

4, Pump shafts and tool holders

• Located in Chang'an Town - the famous town of mould in Pearl River Delta;

• Providing complete services from manufacturing and marketing to distributing;

• Steel exported all over the world;

• Service like peeling,milling,grinding,cutting and heat treatment etc...

• All steel must pass high quality detection;

• 24/7 hours online service with quick response !

Hot work tool steel

DIN

1.2344,1.2343,1.2365,1.2581,1.2367,1.2714 etc.

AISI

H13,H11,H10,H21,L6 etc.

JIS

SKD61,SKD6,SKD5,SKT4 etc.

Cold work too steel

DIN

1.2601,1.2379,1.2080,1.2363,1.2842,1.2419,1.2510,1.2550,1.2767 etc.

AISI

D2,D3,A2,O2,O1 etc.

JIS

SKD1,SKD11,STD12,SKS31,SKS3 etc.

Plastic mould steel

DIN

1.2083,1.2311,1.2312,1.2316,1.2738 etc.

AISI

P20, P20+Ni,P20+S,420 etc.

JIS

NAK80

High speed tool steel

DIN

1.3355,1.3343

AISI

T1,M2

JIS

SKH2,SKH51

Structural alloy steel

DIN

1.7225,1.6511

AISI

4140,4340

JIS

SCM440

We also supply customized special steel, contact us for more information !