Heat-Resisting Stainless Steel

Heat-resistant steel refers to alloy steel that retains high strength, oxidation resistance, corrosion resistance, or excellent creep strength under high-temperature and high-pressure conditions.
Common alloying elements include nickel (Ni), chromium (Cr), aluminum (Al), silicon (Si), tungsten (W), molybdenum (Mo), vanadium (V), and cobalt (Co). Among these, chromium is the primary additive, as it forms a robust oxide film on the surface of the steel, providing protection against gas corrosion at elevated temperatures.

They can be classified into 2 types by alloy added to:

(1) Cr. series Heat-resistant Stainless Steel
(2) Ni. Cr. series Heat-resistant Stainless Steel

They can be classified into 2 types by microstructure:
(1) Ferrite series heat-resistant Stainless Steel
(2) Austenite series heat-resistant Stainless Steel

Compressor turbine, annealing box, exhaust valve cleaning device, fastening parts, spring, film, rotor of gas turbine, bolts.
Besides, heat-resistant Stainless Steel is often applied to petroleum industry, heat-treatment furnace parts or aircraft and automobile parts.

 

Product Applications

Heat-resistant stainless steel possesses excellent high-temperature strength, oxidation resistance, and creep resistance. It can maintain stable performance for extended periods in harsh environments involving high temperatures and pressures, making it suitable for various industrial applications that demand superior heat resistance. Common applications include:

Aerospace — jet engines, exhaust systems, turbine blades;
Petrochemical equipment — process furnaces, heat exchangers, reactors;
Power generation — boilers, heaters, burners;
Automotive industry — exhaust manifolds, exhaust gas recirculation (EGR) systems, catalytic converters;
Industrial furnaces — internal components, heating elements, furnace frames;
Home appliances — oven heating tubes, internal components of microwave ovens, etc.
Heat-resistant stainless steel plays a critical role in these fields, serving as a key material for ensuring reliable operation of equipment under high-temperature conditions.

Utensil products

Medical equipment

Steel data

Standard Code Spec No. Material No. Mark
JIS G4311 SUH31
SAE J775 EV9
DIN 17480 1.4873 X45CrNiW18-9
JIS G4311 SUH35
JIS G4311 SUH36
GB 1221 Y5Cr21Mn9Ni4N
JIS G4311 SUH660
AISI 310
DIN 17480 1.4842 X12CrNi25-20
JIS G4311 SUS630
AISI 630
DIN 17480 1.4542 X5CrNiCuNb17-4
AISI 304
DIN 17480 1.4301 X5CrNi18-9
JIS G4311 SUS316
AISI 316
DIN 17480 1.4401 X5CrNiMo17-12-2
AISI 410
DIN 17480 1.4006 X10Cr13
JIS G4311 SUS410J1
JIS G4311 SUS410L
JIS G4311 SUS420J1
AISI 420
DIN 17480 1.4021 X20Cr13
JIS G4311 SUS430
AISI 430
DIN 17480 1.4016 X6Cr17
(C)% (Si)% (Mn)% (P)% (S)% (Ni)% (Cr)% (Mo)% (N)% (Cu)% (W)% (V)% (Ti)% (Nb)% (B)%
0.35~0.45 1.5~2.5 ≦ 0.6 ≦ 0.04 ≦ 0.03 13~15 14~16 2~3
0.35~0.5 0.3~0.8 ≦ 1 ≦ 0.04 ≦ 0.03 12~15 12~15 0.2~0.5 2~3
0.4~0.5 2~3 0.8~1.5 ≦ 0.045 ≦ 0.03 8~10 17~19 0.8~1.2
0.48~0.58 ≦ 0.35 8~10 ≦ 0.04 ≦ 0.03 3.25~4.5 20~22 0.35~0.5
0.48~0.58 ≦ 0.35 8~10 ≦ 0.04 0.04~0.09 3.25~4.5 20~22
0.48~0.58 ≦ 0.35 8~10 ≦ 0.04 0.04~0.09 3.25~4.5 20~22 0.35~0.5
≦ 0.08 ≦ 1 ≦ 2 ≦ 0.04 ≦ 0.03 24~27 13~16 ≦ 0.35 0.1~0.5 1.9~2.35 0.001~0.01
≦ 0.25 ≦ 1.5 ≦ 2 ≦ 0.045 ≦ 0.03 19~22 24~26
≦ 0.15 ≦ 1.5 1~2.5 ≦ 0.025 ≦ 0.02 19~22 24~27
≦ 0.07 ≦ 1 ≦ 1 ≦ 0.04 ≦ 0.03 3~5 15.5~17.5 3~5 0.15~0.45
≦ 0.07 ≦ 1 ≦ 1 ≦ 0.04 ≦ 0.03 3~5 15.5~17.5 3.5~5 0.15~0.45
≦ 0.07 ≦ 1 ≦ 1 ≦ 0.025 ≦ 0.03 3~5 15.5~17.5 3.5~5 0.15~0.45
≦ 0.08 ≦ 1 ≦ 2 ≦ 0.045 ≦ 0.03 8~10.5 18~20
≦ 0.07 ≦ 1 ≦ 2 ≦ 0.045 ≦ 0.03 8~10.5 17~20
≦ 0.08 ≦ 1 ≦ 2 ≦ 0.045 ≦ 0.03 10~14 16~18 2~3
≦ 0.08 ≦ 1 ≦ 2 ≦ 0.045 ≦ 0.03 10~14 16~18 2~3
≦ 0.07 ≦ 1 ≦ 2 ≦ 0.045 ≦ 0.015 10~13 16.5~18.5 2~2.5 ≧ 0.11
≦ 0.15 ≦ 1 ≦ 1 ≦ 0.04 ≦ 0.03 11.5~13.5
0.08~0.12 ≦ 1 ≦ 1 ≦ 0.045 ≦ 0.03 12~14
0.08~0.18 ≦ 0.6 ≦ 1 ≦ 0.04 ≦ 0.03 ≦ 0.6 11.5~14 0.3~0.6
≦ 0.03 ≦ 1 ≦ 1 ≦ 0.04 ≦ 0.03 11~13.5
0.16~0.25 ≦ 1 ≦ 1 ≦ 0.035 ≦ 0.03 ≦ 0.6 12~14
≦ 0.15 ≦ 1 ≦ 1 ≦ 0.035 ≦ 0.03 12~14
0.17~0.22 ≦ 1 ≦ 1 ≦ 0.045 ≦ 0.03 12~14
≦ 0.12 ≦ 0.75 ≦ 1 ≦ 0.035 ≦ 0.03 16~18
≦ 0.12 ≦ 0.75 ≦ 1 ≦ 0.035 ≦ 0.03 16~18
≦ 0.08 ≦ 1 ≦ 1 ≦ 0.045 ≦ 0.03 16~18