F51 (S31803)
Duplex stainless steel F15
UNS S31803Overview and features of F15:
F15 is a typical duplex stainless steel. It combines high strength, good impact toughness as well as excellent resistance to integral and local stress corrosion, pitting corrosion and crevice corrosion. F51 can resist chloride environments and sulphide stress corrosion. It is suitable for the application at the temperature range from 50℉ to 600℉.Chemical composition of F15 (%):
C
Si
Mn
Cr
Ni
Mo
N
S
P
≤0.03
≤1.00
≤2.00
21.00~23.00
4.50~6.50
2.50~3.50
0.08~0.20
≤0.020
≤0.030
Mechanical property of F15:
Tensile strength N/mm2
105
Proof strength 0.2% N/mm2
55
Elongation %
35
Hardness Brinell
170-255
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