Stainless steel 1Cr18Ni9Ti is ordinary stainless steel (SUS321). Its organization category is austenitic. 1, 18, and 9 in 1Cr18Ni9Ti represent the content of carbon (‰), chromium (%), and nickel (%). It is stainless steel grade in China.


1Cr18Ni9Ti Worldwide equivalents

Country / RegionChinaGermanyJapanFranceEnglandUSAISO
Grade1Cr18Ni9TiX6CrNiTi18 -10SUS 321Z10CNT18-11321S20AISI321X7CrNiTi18-10

Chemical Composition

%0.12MAX1.00MAX2.00MAX0.030 MAX0.035 MAX17.00-19.008.00-11.005*(C%-0.02)~0.80%

1Cr18Ni9Ti Mechanical Properties 

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated ConditionBrinell hardness (HBW)
496 (≥)144 (≥)134143Solution and Aging, Annealing, Ausaging, Q+T,etc112

1Cr18Ni9Ti Mechanical Properties

Tensile strength σ b(MN/m2) ≥550

Yield strength σ s(MN/m2) ≥200

Elongation δ 5(%)〉=40

Heat treatment

1) Solid solution, 920 ~ 1150 ℃ quick cooling

2) Stabilization treatment can be carried out according to the requirements of the demander. The heat treatment temperature is 850 ~ 930 ℃


1Cr18Ni9Ti is used in outdoor machines in the chemical, coal, and petroleum industries that require high grain boundary corrosion resistance. Heat-resistant parts for building materials and parts with difficult heat treatment. Such as petroleum exhaust gas combustion pipes. Engine exhaust pipes. Boiler shells. Heat exchange Heater parts. Silencer parts for diesel engines. Boiler pressure vessels. Chemical transport vehicles. Expansion joints. Spiral welded pipes for furnace pipes and dryers.

product States

Product typeProductsDimensionProcessesDelivery Status
Plates / SheetsPlates / Sheets0.08-200mm(T)*W*LForging, hot rolling, cold rollingAnnealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel BarRound Bar, Flat Bar, Square BarΦ8-120mm*LForging, hot rolling,cold rolling, CastBlack, Rough Turning, Shot Blasting,
Coil / StripSteel Coil /Steel Strip0.03-16.0x1200mmCold-Rolled & Hot-RolledAnnealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / TubesSeamless Pipes/Tubes, Welded Pipes/TubesOD:6-219mm x WT:0.5-20.0mmHot extrusion, Cold Drawn, WeldedAnnealed, Solution and Aging, Q+T, ACID-WASHED