Sa 182 F51 Duplex Fasteners Specification

TorqBolt manufactures high strength Sa 182 F51 Duplex Fasteners.

SA 182 F51 is a forging grage of ALLOY 31803 which is a chromium nickel molybdenum austenitic and ferritic grade. It has improved resistance to stress corossion cracking, piiting, crevice corrossion and high strengths in comparison to other stainless steel grades. It has very good oxidation resiatnce at high temperatures. However, it is prone to embrittlement at 475 Degree celcious if exposed for more than 2 hours. It is widely used in brewing , power generating equipments and wide varierty of marine and oil and gas applicants. It shows very good weldeabliity similar to ther stainless steels, however, it is not suitable for oxytelene arc welding as there is a possibillty of carbon pickup in the welded area.

Sa 182 F51 Duplex Fasteners Properties

Chemical Properties
CMnPSSiCrNIMoN
0.03 Max2.00 Max0.03 Max0.02 Max1.00 Max21.0-23.04.50-6.502.5-3.50.08-0.20

Mechanical Properties
Yeild strengthTensile strengthElongationReductionHardness
MpaMpa%%BHN
minminminmin
4506202550297

Physical Properties
DensityElastic ModulusMean Coefficient of ThermalThermal ConductivitySpecific HeatElectrical Resistivity
(Kg/m3)(Gpa)Expansion(?m/m/°C)(W/m.K)0-100°C(µ?.m)
781019011 X10-6154000.85

Heat Treatment
Solution Annealed @1020°C & liquid Quenced @260°C

Equivalent Designation
ASTM/ASME AISI UNS British Standard Werkstoff No. En Name Swedish(SS) JIS(SUS)
Sa 182 F51 S31803 318S13 1.4470 X2CrNiMoN22-5-3 2377 SUS 329J3L

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