Spring steels

Spring steels

Comparison with standard grades

UNI

AFNOR

DIN-W.Nr

BS

AISI-SAE

UNI

50CrV4

AFNOR

50CV4

DIN-W.Nr

50CrV4 - 1.8159

BS

735A50

AISI-SAE

6150

UNI

55Si7

AFNOR

55S7

DIN-W.Nr

55Si7 - 1.0904

BS

250A53

AISI-SAE

9255

UNI

60Si7

AFNOR

60S7

DIN-W.Nr

60Si7 - 1.0906

BS

250A61

AISI-SAE

(9260H)

UNI

AFNOR

A 35-571

DIN-W.Nr

52SiCrNi5 - 1.7117

BS

-

AISI-SAE

-

According to: UNI EN 10087