Stainless Steel Alloy SS 309 fasteners are most widely used fasteners in corrosion resistant category. SS 309 fasteners are manufactured in wide range of bolts, screws, stud bolts, studs, threaded rods, nuts, washers & custom bolting parts. 309 stainless steel fasteners are exclusively produced in cold forged method under ASTM F593/F594 & BS EN ISO 3506-1/3506-2 specifications. Hot forged 309 stainless steel fasteners are produced under ASTM A182 F309, A193 Grade B8 & A194 Grade 8 specifications. SS 309 fasteners are well suited for its general corrosion resistance and aesthetic appearance.
AISI 309 Chemical Composition |
Grade |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
N |
SS 309 |
≤ 0.20 |
1.50-2.50 |
2.00 |
0.045 |
0.015 |
19.0-21.0 |
11.0-13.0 |
≤ 0.11 |
AISI 309 Mechanical Properties |
Hardness HB 30 ≤ HB |
0.2% Yield strength Rp ≥ N/mm² |
Tensile strength Rm N/mm² |
Elongation A5 ≥ % |
Resistant on air up to °C |
Modulus of elasticity kN/mm² |
223 |
230 |
500-750 |
30 |
1000 |
196 |