309 (309S) SS Coil: High - Quality, Heat - Resistant

309 stainless steel is an austenitic chromium-nickel stainless steel alloy that is known for its excellent oxidation resistance and high-temperature strength. It contains a higher percentage of chromium and nickel compared to 304 stainless steel, which enhances its ability to withstand elevated temperatures and aggressive environments. The "S" in 309S denotes a lower carbon content, which further improves its resistance to sensitization and intergranular corrosion, making it suitable for applications where welding is involved.

product details

specification

Product Name	309/309S Stainless Steel Coil
Type	Steel Coil
Thickness	2.5mm-10.0mm
Length	2000mm,2440mm,3000mm,5800mm,6000mm,etc.
Width	610mm-2000mm
Standard	ASTM, AISI, JIS, GB, DIN, EN, etc.
Surface	BA, 2B, NO.1, NO.4, 4K, HL, 8K, etc.
Scope of Application	Widely used in high temperature and electrical industry, medical equipment constrnuction, chemical, food industry,agniculture and ship parts, foad and beverage packagingKitchen supplies, trains, airplanes, conveyor belts, vehicles, bolts, nuts, springs and screens, etc.
Certificate	ISO, SGS, BV etc.
Production Technology	Hot Rolling, Cold Rolling
Edge Processing	Edging, Trimming

Product Display

Chemical Composition

C	Si	Mn	Cr	Ni	S	P
≤ 0.08	≤ 0.75	≤ 2.0	22.0～24.0	12.0～15.0	≤ 0.03	≤ 0.045

Mechanical Properties

Tensile Strength Kb (MPa)	Yield Strength σ0.2 (MPa)	Elongation D5 (%)	Hardness
≥515	≥205	≥35	≤ 217HB

Physical Performance

Density(g/cm³)	Modulus of Elasticity(Gpa)	Coefficient of Thermal Expansion(10-6/°C)	Coefficient of Thermal Conductivity(W/m*K)	Resistivity(ΜΩ. cm)
7.98	200	14.9	15.6	78