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309/309S stainless steel pipe

309 and 309S are austenitic chromium-nickel stainless steels that are typically used for higher temperature applications. Due to its high chromium and nickel content, 309 and 309S alloys have a high degree of corrosion resistance, excellent oxidation resistance and excellent heat resistance, while providing good strength at room temperature and high temperature. The only significant difference between 309 and 309S is the carbon content. The 309S alloy has less carbon, which minimizes carbide precipitation and improves weldability.

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309/309S stainless steel pipe

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Product Description

Product Description

Product Parameters

Product Name		309/309S stainless steel pipe
Type		Steel Pipe
Outer diameter	round tube	4mm-200mm
	Square pipe	1010mm-100100mm
	rectangular tube	1020mm-50100mm
Wall thickness		0.6mm-6.0mm
Length		1-6 meters, length can be customized
Standard		ASTM / AISI / JIS / GB / DIN / EN
Surface		Black, bright polished, rough turning, matte finish, NO. 4. BA, etc.
Scope of application		Common applications for stainless steel pipes include food processing, textile operations, breweries, water treatment plants, oil and gas processing, fertilizers and pesticides, chemical applications, Construction, pharmaceuticals, auto parts, etc.
Certificate		ISO / SGS / BV
production technology		Hot Rolling/Cold Rolling
Edge processing		Edge grinding/trimming

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 σb (MPa)	Yield strength σ0.2 (MPa)	Elongation δ5 (%)	Hardness
≥ 515	≥ 205	≥ 35	≤ 217HB

Physical Performance

Degreaser (g/cm³)	Modulus of elasticity (Gpa)	Coefficient of thermal expansion (10^-6/°C)	Thermal conductivity (W/m * K)	Resistivity (µΩ.cm)
7.98	200	14.9	15.6	78