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4340 Round Steel Bars

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Shenzhen Guangshenfa Metal Co., Ltd

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4340 Round Steel Bars

Place of Origin : shenzhen

Brand Name : GSF

Model Number : 4340

Certification : ISO-9001

Price : negotiate

Packaging Details : as customers's requirement

Delivery Time : 7-30 days after deposit

Payment Terms : T/T

Supply Ability : 1000 ton / month

MOQ : 10tons

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4340 Round Steel Bars,
Steel Grade: Alloy Steel 40CrNiMo/1.6563,
Specification:
Diameter (mm) Length (mm)
Round bars: 12~3000 4000~6000 Hot rolled
280~1000 3000~5800 Forged
Thickness(mm) Width(mm) Length (mm)
Flat bars/Blocks 20~600 50~1000 1000~5800
Delivery condition:
1. EAF+LF+VD, rolled /forged, UT pass
2. Surface: Black surface, turned surface and milling surface according to customer's requirements.
3. Heat treatment such as normalizing or annealing or Q/T can be done according to customer's technical specifications.

4340 Round Steel Bars,
Grade: Alloy Steel 40CrNiMo/4340/SCM439/4CrMo4/1.6563

Chemical Composition
C	Si	Mn	Cr	Mo	P	S	Cu	Ni
0.37-0.44	0.17-0.37	0.50-0.80	0.60-0.90	0.15-0.25	≤0.025	≤0.025	≤0.30	≤0.30

Mechanical Properties

Tensile Strength
Rm,MPa

Yield Strength
Rel,MPa

Elongation
A,%

Reduction
Z,%

I mpacting Energy
Aku,J

HBW
≤
After Annealing

≥980

≥835

≥12

≥55

≥78

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