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Huangshi Chengquan Metal Material Co., Ltd.

Mat. No. 1.7176, DIN 55cr3, SAE 5155 manufacturer / supplier in China, offering Mat. No. 1.7176 DIN 55cr3 SAE 5155 55crmna Sup9 Spring Steel, SUS444 Steel Sheet with High Quality and Competitive Price, 1.2825 Round Tool Steel Bar and so on.

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Supplier Homepage Product Spring Steel Spring Steel Bar Mat. No. 1.7176 DIN 55cr3 SAE 5155 55crmna Sup9 Spring Steel

Mat. No. 1.7176 DIN 55cr3 SAE 5155 55crmna Sup9 Spring Steel

FOB Price: US $300-1,000 / Ton
Min. Order: 1 Ton
Min. Order FOB Price
1 Ton US $300-1,000/ Ton
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Port: Shanghai, China
Production Capacity: 5000tons/Year
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: Mat. No. 1.7176 DIN 55Cr3 SAE 5155 55CrMnA SUP9
  • Standard: AISI, ASTM, DIN, JIS, GB, BS
  • Technique: Hot Forged,or Hot Rolled
  • Surface Treatment: Black Surface
  • Application: Spring Steel
  • Transport Package: Seaworth Packing
  • Origin: Huangshi, Hubei
  • Type: Flat
  • Composition: Ferrous Steel Scrap
  • Shape: Round,Flat or Square
  • Special Use: Spring Steel
  • Trademark: CHENGQUAN
  • Specification: Round Bar: Dia12~420mm Flat Bar: 2~420 X 30~1500mm
  • HS Code: 7228100000
Product Description


Steel grade for laminated springs thickness above 7 mm for trucks and railway vehicles, coiled and threaded springs.

Quality Standard:

JIS G4801 2005 Spring Steels
BS EN 10089 2002 Hot rolled steels for quenched and tempered springs
ASTM A29 Standard Specification Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements

All Grades Comparison:

1.717655Cr3525A58, 525H6055C3SUP9515555CrMnA

Chemical Composition(%)

Steel GradeCSiMnPSCr
51550.51-0.590.15-0.350.70-0.900.035 max0.040 max0.75-1.00
55Cr30.52-0.590.40 max0.70-1.000.025 max0.025 max0.70-1.00
SUP90.52-0.600.15-0.350.65-0.950.030 max0.030 max0.65-0.95
SUP9A0.56-0.640.15-0.350.70-1.000.030 max0.030 max0.70-1.00
55CrMnA0.52-0.600.17-0.370.65-0.950.025 max0.025 max0.65-0.95


  1. FORGING:Hot forming temperature: 1050 - 850°C.
  2. SOFT ANNEALING: Heat to 640 - 680°C, cool slowly in furnace. This will produce a maximum Brinell hardness of 248.
  3. HARDENING: Harden from a temperature of 830 - 860°C followed by oil quenching.
  4. TEMPERING:Tempering temperature: 430 - 500°C, air.

Mill′s test certificate:

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.
Mat. No. 1.7176 DIN 55cr3 SAE 5155 55crmna Sup9 Spring Steel
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