uns s31008 Chemical composition
Fe, <0.25% C, 24-26% Cr, 19-22% Ni, <2% Mn, <1.5% Si, <0.45% P, <0.3% S
What is 310 grade stainless steel?ss 310 is a medium carbon austenitic stainless steel, for high temperature applications such as furnace parts and heat treatment equipment. It is used at temperatures up to 1150°C in continuous service, and 1035°C in intermittent service.SuS310, combining excellent high temperature properties with good ductility and weldability, is designed for high temperature service. It resists oxidation in continuous service at temperatures up to 1150°C provided reducing sulphur gases are not present. It is also used for intermittent service at temperatures up to 1040°C.
SUS310S (UNS S31008) is used when the application environment involves moist corrodents in a temperature range lower than that which is normally considered “high temperature” service. The lower carbon content of 310S does reduce its high temperature strength compared to SUS310.
Like other austenitic grades these have excellent toughness, even down to cryogenic temperatures, although other grades are normally used in this environment.
Chemicial Composition of Stainless Steel 310/310S
Grade C Mn Si P S Cr Mo Ni N SS310 min.
max.
–
0.25
–
2.00
–
1.50
–
0.045
–
0.030
24.0
26.0
– 19.0
22.0
– SS310S min.
max.
–
0.08
–
2.00
–
1.50
–
0.045
–
0.030
24.0
26.0
– 19.0
22.0
– Mechanical Properties for SUS310 stainless steels
Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness Rockwell B (HR B) max Brinell (HB)
maxSS 310 515 205 40 95 217 SS 310S 515 205 40 95 217 Comparison grade difference between 310 and 310S
Grade UNS No Old British Euronorm Swedish SS Japanese JIS BS En No Name SS310 S31000 310S24 – 1.4840 X15CrNi25-20 – SUH 310 SS310S S31008 310S16 – 1.4845 X8CrNi25-21 2361 SUS 310S These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.
Alternative grades to aisi 310 stainless steels are given .
Product Details
Electrical
Resistivity
[μΩm]Thermal
Expansion
Coefficient
×10-6/Density
g/cm3
(20℃)Melting Point
℃0.78 14.4 7.98 1400
Chemical
CompositionC Ni Cr Mo Si Mn P S (%) ≦0.08 19.0~22.0 24.0~26.0 - ≦1.50 ≦2.00 ≦0.045 ≦0.030
Alloys Type Diameter (mm) SUS310S Wire φ6.00~0.020 SUS310S Ribbon t=2.90~0.05 w=40~0.2 (Depends on thickness)