Gold Member Since 2015
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Guangzhou Changfeng Steel Co., Ltd.

Alloy Steel, Steel, Hot Rolled Steel manufacturer / supplier in China, offering Hot Rolled Alloy Steel for Special Steel (1.7225/SAE4140/42CrMo/SCM440), Cold Work Mould Steel Plate( D3/1.2080/SKD1), P21/NAK80 Steel Sheet for Plastic Mould Steel and so on.

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Supplier Homepage Product Alloy Steel Hot Rolled Alloy Steel for Special Steel (1.7225/SAE4140/42CrMo/SCM440)

Hot Rolled Alloy Steel for Special Steel (1.7225/SAE4140/42CrMo/SCM440)

Purchase Qty.:
(Tons)
3-4 5-19 20+
FOB Unit Price: US $1,170 US $1,150 US $1,120
Purchase Qty. (Tons) FOB Unit Price
3-4 US $1,170
5-19 US $1,150
20+ US $1,120
Get Latest Price
Port: Shenzhen, China
Production Capacity: 1000t/Month
Payment Terms: L/C, T/T, D/P

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Basic Info
  • Model NO.: 1.7225/SAE4140/42CrMo/SCM440
  • Standard: AISI, ASTM, DIN, JIS, GB, BS
  • Technique: Hot Rolled
  • Surface Treatment: Polished
  • Application: Die Steel Bar
  • Technology: Hot Rolled/Forged/Clod Drawn
  • Width: 205~610mm
  • Certificate: ISO/Mill Certificate
  • Payment: L/C or T/T or Trade Assurance
  • Trademark: CF STEEL
  • Specification: diameter 14-460mm
  • HS Code: 7228300000
  • Type: Alloy Steel Bar
  • Composition: Alloy Steel
  • Shape: Bar
  • Special Use: Wear Resistant Steel, Mold Steel
  • Heat Treatment: Annealing/Q+T
  • Thickness: 6-80mm
  • Length: 2000~4000mm
  • Test: SGS/Ut100%/Elements Testing
  • Delivery Quantity: Include MOQ
  • Transport Package: Quality Export Package
  • Origin: Guangdong, China
Product Description
1.7225/SAE4140/SCM440 Alloy Steel Round Bar for mechanical

Chemical Composition(%)
CSiMnCrMoPSNi
0.38~0.450.17~0.370.60~0.900.90~1.200.15-0.25≤0.018≤0.030≤0.012
Available size(mm)
Flat Bar Size(mm)Round bar Size(mm)
ThicknessWidthLengthDiameterLength
10-200155-22002000-600020-2003000-6000

1, Application
Used in the manufacture of high strength, large cross-section forgings such as supercharger transmission gear,rear axle,hummar shank etc.

2, Features
1) Weldability suffers with increasing chromium content;
2) High temperature strength and high pressure hydrogenation properties are promoted by chromium and molybdenum;
3) Molybdenum significantly reduces temper brittleness;
4) Chromium renders steel oil hardenable and increase hardenability;
5) Chromium molybdenum high tensile steel with yield strength of 550N/mm2;
 
3. Mechanical Properties:
Tensile strength:σb (MPa):≥1080(110) 
Yield strength:σs (MPa):≥930(95)
Elongation:δ5 (%):≥12
Section shrinkage:ψ (%):≥45
Impact work:Akv (J):≥63
Impact toughness value:αkv (J/cm²):≥78(8)

4. Recommend heat treatment
quenchtemper
Heating temperature/ºCCooling wayHardness (HRC)Tempering
 temperature
/ºC
Hardness
(HRC)
Preheating temperatureSolution temperature
500-600850-880Oil Cooling50-52200≥48

5. Ready Stock: 
Round Bar diameter 14-460mm.All the sizes as require can be customerized as fresh production with MOQ.
 
6. Delivery state:
Hot rolled, Heat Treatment,black, hardness or tempered hardness:28-34 HRC.
Annealing:HBS<=235.

7. Delivery time
For abundant stock, 15-20 days.For customized products, 30-50 days.

    Why Choose Us
1) Competitive price andquality from our own factory
2) Approved by ISO9001,CE,SGS every year
3) Best service with 24 hours reply
4) Flexible payment with T/T,L/C,Trade Assurance
5) Smooth production ability(1000tons/month)
6) Quick delivery and standard exporting package
7) OEM/ODM
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Mrs. Helen Xie
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