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Mat.No. 1.5028 DIN 56Si7 SAE 9260H 60Si2Mn SUP7 Spring Steel

Mat.No. 1.5028 DIN 56Si7 SAE 9260H 60Si2Mn SUP7 Spring Steel p1 sup7 spring steel Mat.No. 1.5028 DIN 56Si7 SAE 9260H 60Si2Mn SUP7 Spring Steel Mat


Mat.No. 1.5028 DIN 56Si7 SAE 9260H 60Si2Mn SUP7 Spring Steel p1

Mat.No. 1.5028 DIN 56Si7 SAE 9260H 60Si2Mn SUP7 Spring Steel Strip sup7 spring steel Mat.No. 1.5028 DIN 56Si7 SAE 9260H 60Si2Mn SUP7 Spring Steel Mat


Mat.No. 1.5028 DIN 56Si7 SAE 9260H 60Si2Mn SUP7 Spring Steel Strip

Mat.No. 1.5028 DIN 56Si7 SAE 9260H 60Si2Mn SUP7 Spring Steel Wire sup7 spring steel Mat.No. 1.5028 DIN 56Si7 SAE 9260H 60Si2Mn SUP7 Spring Steel Mat


Mat.No. 1.5028 DIN 56Si7 SAE 9260H 60Si2Mn SUP7 Spring Steel Wire

Introduction:

Special structural steel.

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 Requirements

All Grades Comparison:

Material No. EN JIS ASTM GB
1.5028 56Si7 SUP7 9260H 60Si2Mn

Chemical Composition(%)

Steel Grade C Si Mn P S
9260 0.56-0.64 1.90-2.20 0.75-1.00 0.035 max 0.040 max
56Si7 0.52-0.60 1.60-2.00 0.60-0.90 0.025 max 0.025 max
SUP7 0.56-0.64 1.80-2.20 0.70-1.00 0.030 max 0.030 max
60Si2Mn 0.56-0.64 1.50-2.00 0.70-1.00 0.035 max 0.035 max

HEAT TREATMENT:

  • FORGING:Hot forming temperature: 1050-850oC.
  • SOFT ANNEALING: Heat to 640-680oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 255.
  • HARDENING: Harden from a temperature of 830-860oC followed by oil quenching.
  • TEMPERING:Tempering temperature: 350-550oC, air.

Mill′s test certificate:

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.