DIN 1.7102 Spring Steel Bar
DIN 1.7102 is German Standard Spring Steel with high quality.
Equivalent to 54SiCr6
Material No.:
1.7102
Material group:
Chemical composition:
(typical analysis at in %)
Application:
Hot forming and heat treatment:
Mechanical properties:
0,2% proof stress Rp0,2 [N/mm2] Tensile strength Rm [N/mm2] Fracture elongation A5 [%] Reduction of area Z [%]
Notch impact energy ISO-V [J]
German standard: International steel grades: DINEN10089 SAE: 9254
JIS: SUP 12 Hot rolled steel for quenched and tempered springs
Deviation in chemical composition on request
Si alloyed quenched and tempered steel for production of springs with smaller sag tendency, especially of high-stressed automotive suspension springs, produced by cold and hot forming
Hot rolling:
Hot forming to springs: Normalising:
Soft annealing: Hardening: Tempering:
Treated for cold shearability (+S): Soft annealed (+A):
Spheroidized annealed (+AC):
1050 - 850°C
940 - 840°C
850 - 880°C/air
640 - 680°C/furnace min. 840°C/oil
375 - 500°C/air
max. 280 HB max. 248 HB max. 230 HB