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Guangzhou Changfeng Steel Co., LTD
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GB Hot Rolled Alloy Steel Round Bar 5140 1.7035 SCR440 41Cr4 To Make Shaft , Screw Bolt

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China Guangzhou Changfeng Steel Co., LTD certification
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GB Hot Rolled Alloy Steel Round Bar 5140 1.7035 SCR440 41Cr4 To Make Shaft , Screw Bolt

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Large Image :  GB Hot Rolled Alloy Steel Round Bar 5140 1.7035 SCR440 41Cr4 To Make Shaft , Screw Bolt

Product Details:
Place of Origin: China
Brand Name: CF STEEL
Certification: ISO, Mill Certificate
Model Number: 40Cr SAE5140 1.7035 SCr440
Payment & Shipping Terms:
Minimum Order Quantity: 3MT
Price: USD800-900/MT
Packaging Details: Export Standard Packing or Customers'demand
Delivery Time: 7-15 days
Payment Terms: L/C, T/T
Supply Ability: 1000t/Month
Detailed Product Description
Standard: AISI,DIN,ASTM,GB Surface: Machined,black,Plain,mill Finish Or Peeled Finish,Grinding
Technique: Forged,Hot Rolled,Hot Work Mould Steel Test: SGS / Ut 100% / Element Testing
Delivery Condition: Hot Rolled, Forged Ut Standard: Sep 1921-84 Class 3 C/C To D/D
Sample: Free Heat Treatment: Annealing/Q+T
Hs Code: 722540 & 722830
High Light:

alloy steel plate


hot rolled steel plate

5140 1.7035 SCR440 41Cr4 Round Hot Rolled Steel


Round bar: Diameter(mm) Max 800mm; Length(mm) Max 12000mm.

Plate: Thickness(mm) Max 800mm; Width(mm) Max 2300mm; Length(mm) Max 12000mm.

Condition: Cold rolled(drawn)≤50mm, Hot rolled≤12-250mm, Hot forged≥50mm.(Thickness/Diameter)

Surface Treatment

Plate: Origin Black, Orign cold rolled bright, Machined, Grinded

Bar: Origin Black, Orign cold rolled(drawn) bright, Turned, Peeled, Grinded

Chemical composition
NAME C Si Mn P S Cr Ni
1.7035 0.28-0.33 0.20-0.35 0.40-0.60 ≤0.035 ≤0.030 0.80-1.10 --
Similar grade
40Cr 5140 1.7035 SCr440

Q+T Properties

Tensile Strength σb (MPa):≥980(100)
Yield Strength σs (MPa):≥785(80)
Elongation δ5 (%):≥9
Reduction ψ (%):≥45
Impact Energy Akv (J):≥47
Impact Toughness αkv (J/cm2):≥59(6)
Annealed Hardness ≤207HB


Heat Treatment

Hot working temperature ºC: 1050-850

Annealing temperature ºC: 680-720

Normalizing temperature ºC: 840-880

Quenching temperature ºC: 820-850 water, 830-860 oil

Tempering temperature ºC: 540-680


1. High strength and toughness.
2. High hardenability and the oil critical hardening is diameter 15~70mm.
3. Good machinability and the cold plastic deformation is medium.


1. It is used at quenched and tempered condition,can be used in carburizing steel which need
high strenght in the centre.

2. For making large cross section and Work under high stress condition conditioning parts.
Like shaft and high load handwheel; bolt; stud;wheel gear etc.

3. For making welding parts; board;welding structure;high pressure pipe in the chemical industry.
4. For making temperature under 450°C's fastener in the steam turbine, boiler manufacturing.

1.Q:Are your a factory or a trading compangy?
A:We are a factory.
2.Q:How can I get some sample?
A:We are honored to offer you samples
3.Q:What are the difference between you and other steel company?
A:Quality first! The price will be changed according to your order. The rechargeable sample's will
return to you after you offer the deposit!Our company are full of chinese culture,Won't you want to come here^.^?
The sales are beautiful and handsome0.0!

GB Hot Rolled Alloy Steel Round Bar 5140 1.7035 SCR440 41Cr4 To Make Shaft , Screw Bolt 0
Changfeng Tool & Die Steel main product:
STANDARD/GRADE of steel Flat Bar Size(mm) Round bar Size(mm) Technics
DIN AISM JIS GB(China) Thickness Width Length Diameter Length
1.121 SAE1050 S50C 50# 10-450 155-2200 2000-12000     Forged, Hot Rolled
1.2311 P20 PDS-3 3Cr2Mo 10-460 155-2200 2000-10000 20-200 2000-6000
1.2738 P20+Ni - 3Cr2NiMnMo 21-300 155-2200 2000-8000 20-200 2000-6000
1.2379 D2 SKD10 SKD10 10-200 155-810 2000-6000 14-80 3000-6000
1.2080 D3 SKD1 3Cr2Mo 10-200 155-810 2000-6000 20-200 3000-6000
1.2083 420 - 4Cr13 10-500 155-1200 2000-6000 12-300 3000-6000
1.2344 H13 SKD61 4Cr5MoSiV1 10-500 155-1600 2000-6000 16-400 3000-6000
1.2510 O1 SKS3 9CrWMn 10-200 155-810 2000-6000 20-200 3000-6000
1.7225 SAE4140 SCM440 42CrMo 10-280 155-2200 2000-6000 16-450 3000-6000


About Us
Guangzhou Changfeng Steel Co., Ltd.
is a professional special steel company, which specializing in this line in China since 2005. Our main products are Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Structural Steel, Tool Steel, Stainless Steel, Carbon Steel and Forged Block.

GB Hot Rolled Alloy Steel Round Bar 5140 1.7035 SCR440 41Cr4 To Make Shaft , Screw Bolt 1

To ensure provide high quality products to customers, we have close cooperation with many Chinese first class special steel enterprises, including Baosteel Group, Dongbei Special Steel, Changcheng Special Steel, Hongsheng Heavy Industry, Xingcheng Special Steel and Daye Special Steel.



Contact Details
Guangzhou Changfeng Steel Co., LTD

Contact Person: Echo

Tel: +8613535323261

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