SAE 5140 40cr SCR440 Steel Round Bar for 8.8 Grade Bolt

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Ferrous Steel Scrap
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: Polished
• Model NO.: 5140
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Tool Steel Bar
• Steel Grade: Prime Steel
• Elongation: 25
• Strength: 375-500
• Poisson′s Ratio: 0.25~0.33
• Certificate: ISO SGS
• OEM: Yes
• Delivery Time: 5~10 Working Days
• Yield Strength: 225
• Transport Package: Woven Bag, Wooden Box
• Specification: ISO SGS
• Trademark: Taixie
• Origin: Wuxi, Jiangsu
• HS Code: 7507120000
• Production Capacity: 10000tons/Y

Product Description

Product Description
SAE 5140 40Cr SCR440 Steel Round Bar for 8.8 grade bolt
SAE 5140 40Cr SCR440 Steel Round Bar for 8.8 grade bolt

We company are specialized to export kind grades of steel round bar to fastener manufacturer and fastener manufacturing field .our main grade for fasteners are :A36,SAE 5140,40Cr,Grade 55,Grade 60,B7,AISI 4140,10B21,10B33, and so on,.
If you have any inquiry, please feel free to contact me, we will be happy if we can solve problems and save your cost in your production.

SAE 5140 40Cr SCR440 Steel Round Bar for 8.8 grade bolt
1.Size range:

Sizes details	diameter	16-300mm
	length	1-12m(canbe customerized)
Sizes tolerance	length	-0/+50mm
	Straightness	3mm/m(max)

2.40cr sae 5140 for 8.8 grade fasteners--equal grades

GB	ASTM	JIS	DIN	BS	NF
40Cr	5140	SCr440	41Cr4(1.7035)	530A40	42C4

3.Chemical composition

C	Si	Mn	Cr	Ni(≤)	Cu(≤)	P(≤)	S(≤)
0.37-0.44	0.17-0.37	0.5-0.8	0.8-1.0	0.3	0.03	0.035	0.035

4.Mechanical property

Tensile strength	Yild strength	Elongation	reduction of area
Min (%)	Min (%)	Min (%)	Min (%)
Mpa	Mpa	Mpa	Mpa
980	785	9	45

5.Quality control
1.Processing Line:
Iron - hot metal pretreatment - Converter - Refining --VD / RH- - Continuous Casting - Hot Rolling (KOCKS) - heat --UT Check - Processing and Distribution Center
Electric Furnace - Refining --VD / RH- - Continuous Casting - Hot Rolling (KOCKS) - heat --UT Check - Processing and Distribution Center
2.Gas content level:O2 - <20 ppm H2 - <2 ppm N2- <100 ppm
3.Grain Sizes:5-8
4. non-metallic inclusions contorlling level

	A	B	C	D
	MAX	MAX	MAX	MAX
Thin	2	2	2	2
Thick	1	1	1	1