Product Details

Steel Grade: Q195; Q235; A36; SS400; ST37; SAE1006/1008; S275JR; 20#; 45#; Q345,S35

Standard: AISI, ASTM, BS, DIN, GB, JIS Dimensions: 6-450mm
Place of Origin: China (Mainland) Brand Name: roudn bar
Technique: Hot Rolled Application: Structural Steel Bar
Alloy Or Not: Is Alloy Type: Alloy Steel Bar
Manufacturing technique: hot rolled, cold rolled , forged Length: 6m--12m as your requirements
Surface: Polished, black, Material: alloy, carbon steel, stainless steel

Chemical Element of 4140 round bars alloy steel

Standard	Grade Number	Chemical Element
GB	42CrMo	C	Si	Mn	P	S	Cr	Ni	Mo	Cu
ASTM	4140	0.36-0.44	0.10-0.40	0.65-1.10	≤0.04	≤0.04	0.75-1.20	-	0.15-0.35	≤0.030
DIN	42CrMo4 1.7225	0.35-0.44	0.15-0.30	0.70-0.90	≤0.035	≤0.04	0.80-1.10	-	0.15-0.25	≤0.025
JIS	SCM440	0.38-0.42	0.15-0.35	0.60-0.85	≤0.03	≤0.03	0.9-1.20	≤0.25	0.15-0.30	≤0.30

Physical Properties of 4140 round bars alloy steel

Physical Properties
Tensile Strength (MPa)		≥1080(110)
Yield strength(MPa)		≥930(95)
Elongation(%)		≥12
Reduction of area(%)		≥45
Akv (J)		≥63
Impact roughness(J/cm2)		≥78(8)
Hardness		≤217HB
Specimen size		25mm

Packaging & Shipping

Steel strap in bundles, seaworthy wooden cases ,waterproof paper and as your require.

Certifications

Company Information

Henan Liaison Import&Export Co., Ltd (LIAISONSTEEL)was established in 2009,after 5 years development, our company have a mature export system. From the beginning of selling steel plates and pipes,then steel products’ primary processing which cover steel plate’s cutting,splitting, the pipe’s bending, until now we can do the steel fabrication on 680mm thick plate,customer’s high requirements improved LIAISONSTEEL’s growing. Because our qualified products and a timely delivery,we became a steel plate fabrication cooperator with customer from Africa, Australia, Singapore, Thailand and several countries from South America.

Our Services

Our superiority:

Supplying abroad standard ASTM,EN,JIS steel plate and pipes.

Supplying plant construction materials such as H beam,I beam, U beam,C channel.

Supplying large-scale section’s welding.

Supplying clad steel plate.

Supplying steel plate or pipes’ fabrication be used for heavy equipment, water power station’s gate, industry mould, working table of machine tool,parts.

FAQ

1.Q: What's your main market?

A: We mainly export to Middle East and South Eastern Asia. And this year our products enter into South America.

2.Q :Are you factory?

A:Yeah, we are.

3. Q: Are you professional at your products?

A: Our company has over 10year experience on service end user and knows well about characters and usage of material,profes sional suggestion about products can be offered when you needed.

4.Q: Can I get some samples free?

A: Free sample can be provided if you require to check the quality.

Contact Me