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

• Type: Flat
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Ferrous Steel Scrap
• Technique: Hot Forged,or Hot Rolled
• Shape: Round,Flat or Square
• Surface Treatment: Black Surface
• Model NO.: Mat. No. 1.7176 DIN 55Cr3 SAE 5155 55CrMnA SUP9
• Special Use: Spring Steel
• Application: Spring Steel
• Transport Package: Seaworth Packing
• Specification: Round Bar: Dia12~420mm Flat Bar: 2~420 X 30~1500mm
• Trademark: FUSHUN
• Origin: Huangshi, Hubei
• HS Code: 7228100000
• Production Capacity: 5000tons/Year

Product Description

Applications: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 RequirementsAll Grades Comparison:

Material No.	EN	BS	AFNOR	JIS	ASTM	GB
1.7176	55Cr3	525A58, 525H60	55C3	SUP9	5155	55CrMnA

Chemical Composition(%)

Steel Grade	C	Si	Mn	P	S	Cr
5155	0.51-0.59	0.15-0.35	0.70-0.90	0.035 max	0.040 max	0.75-1.00
55Cr3	0.52-0.59	0.40 max	0.70-1.00	0.025 max	0.025 max	0.70-1.00
SUP9	0.52-0.60	0.15-0.35	0.65-0.95	0.030 max	0.030 max	0.65-0.95
SUP9A	0.56-0.64	0.15-0.35	0.70-1.00	0.030 max	0.030 max	0.70-1.00
55CrMnA	0.52-0.60	0.17-0.37	0.65-0.95	0.025 max	0.025 max	0.65-0.95

HEAT TREATMENT:

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