Henan BEBON international co.,ltd

Austenitic stainless steel 12Cr18Ni9 main features and application

The properties for 12Cr18Ni9 steel are specified for flat rolled product (plate, sheet and coil) in GB/T1220, Good resistance in applications involving external exposure to mildly corrosive conditions at ambient temperatures. GB/T1220 12Cr18Ni9 steel can be supplied with a tensile strength of up to 1800 MPa in strip and wire forms, to produce tempers in the range of 1/16 Hard to Full Hard. The controlled analysis of 12Cr18Ni9 steel enables it to retain sufficient ductility in conditions up to 1/2 hard conditions to be roll or brake formed into aircraft, architectural and particularly rail car structural components. However, 3/4 to full hard tempers should be used whenever high wear resistance and spring features are required in components of simple form designs.
Typical uses of 12Cr18Ni9 steel include (1)Rail car structural components - often roll formed, brake pressed or stretch formed to profiles but also used flat. (2)Airframe sections. (3)Highway trailer components. (4)Automotive wheel covers. (5)Wiper blade holders and clips. (6)Toaster springs. (7)Stove element clips. (8)Screen frames. (9)Curtain walls

The equal material of GB/T1220 12Cr18Ni9 in different standard.

GB/T1220 / ISO/TS15510 / TOCT / ASTM A959 / JIS G4403 / EN 10088-1
12Cr18Ni9 / X10CrNi18-8 / 12X18H9 / 302(S30200) / SUS302 / X10CrNi18-8

GB/T1220 12Cr18Ni9 chemical composition

C / Si / Mn / P / S / Ni / Cr / N
≤0.15 / ≤1.00 / ≤2.00 / ≤0.045 / ≤0.030 / 6.00-8.00 / 16.00-18.00 / ≤0.10

GB/T1220 12Cr18Ni9 mechanical property and delivery condition.

Type / Standard / condition of delivery / mechanical property / hardnessvalue
technical conditions / Grade / Sample state / Rm
MPa / Rp0.2
MPa / A
% / Z
% / HBW / HRB / HV
≥ / ≤
steel rod
square steel
steel flat
hexagonal steel
octagonal steel
steel plate
steel strip / GB/T1220 / 12Cr18Ni9 / solid solution
pickling
Strain
Hardening / solid solution / 520 / 205 / 40 / 60 / 187 / 90 / 200
ISO/TS15510 / X10CrNi18-8
ASTM A959 / 302(S30200)
JIS G4403 / SUS302
EN 10088-1 / X10CrNi18-8
TOCT / 12X18H9

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