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ASTM A312 TP309cb Schedule 40 SS Seamless Pipe High Temperature Tube

Name: ASTM A312 TP309cb Schedule 40 SS Seamless Pipe High Temperature Tube
Brand: Wenzhou Zheheng Steel Industry Co.,Ltd
SKU: TP309cb
Price: 2,600.00 USD
Availability: InStock

Product Details

Place of Origin: Wenzhou,China

Brand Name: Zheheng

Certification: ISO9001

Model Number: TP309cb

Document: Product Brochure PDF

Payment & Shipping Terms

Minimum Order Quantity: MOQ500kg

Packaging Details: In wooded cases or pallets,or as for clients requirement

Delivery Time: 7-15 working days after receiving payment

Payment Terms: L/C, D/P, T/T, Western Union

Supply Ability: 1000 Ton/Tons per Month

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Product Details

Product Description

Highlight: 
                                                                                                                                                                                                                                                TP309cb SS Seamless Pipe, ASTM A312 SS Seamless Pipe, Schedule 40 SS Seamless Pipe
                              

WT:	SCH5-XXS	Size:	1/8''-24''
Surface Finish:	Polishing, Hair Line,Pickling	Price Terms:	FOB,CIF,CFR,EXW
Application:	Industry	Ends:	Plain/Bevelled

WT:	SCH5-XXS
Size:	1/8''-24''
Surface Finish:	Polishing, Hair Line,Pickling
Price Terms:	FOB,CIF,CFR,EXW
Application:	Industry
Ends:	Plain/Bevelled

ASTM A312 TP309cb Schedule 40 SS Seamless Pipe High Temperature Tube

Product Overview

309Cb belongs to the Austenitic series stainless steel, containing niobium element, which can resist high-temperature oxidation, corrosion and deformation caused by thermal cycling. It has good weldability and machinability.

309Cb is widely used in petrochemical, electric power, pharmaceutical and other industries under high temperature conditions. It is often used in the manufacture of high temperature stoves, petroleum equipment and chemical equipment.

Chemical Composition

A312 Grades	UNS	C	Mn	P	S	Si	Cr	Ni	Mo	Nb
TP309Cb	S30940	0.08	2	0.045	0.03	1	22.0-24.0	12.0-16.0	0.75	10xC min 1.10 max

Mechanical Properties

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness Rockwell B (HR B) max	Hardness Brinell (HB) max
309CB	515	205	40	95	217

Physical Properties

Property	Condition	Value
Density (lb./in²) @ RT		0.29
Modulus of Elasticity in Tension (psi x 10⁶)		29
Specific Heat (BTU/°F/lb.)	32 to 212°F	0.12
Thermal Conductivity (BTU/hr/ft²/ft)	212°F	9
Thermal Conductivity (BTU/hr/ft²/ft)	932°F	10.8
Mean Coefficient of Thermal Expansion (in. x 10⁻⁶ per °F)	32 to 212°F	8.3
Mean Coefficient of Thermal Expansion (in. x 10⁻⁶ per °F)	32 to 600°F	9.3
Mean Coefficient of Thermal Expansion (in. x 10⁻⁶ per °F)	32 to 1,000°F	9.6
Mean Coefficient of Thermal Expansion (in. x 10⁻⁶ per °F)	32 to 1,200°F	10
Electrical Resistivity (micro ohms - cm)	at 70°F	39.8
Melting Point Range (°F)		2550 - 2650
Oxidation Resistance - Continuous Service (°F)		2000
Oxidation Resistance - Intermittent Service (°F)		1800

Corrosion Resistance Enhancement

Form a stable passivation film on the steel surface. Passivation creates a thin protective film that hinders the anode process, improving chemical stability. Chromium content in the steel increases chromium in the TP309cb stainless steel tube film, enhancing film stability with thickness above 1nm.
Obtain a single solid solution structure. For example, 18Cr-8Ni austenitic stainless steel achieves high corrosion resistance only after solution treatment to obtain a single uniform austenitic structure.
Increase the electrode potential of the solid solution. Metal corrosion resistance is closely related to medium type, concentration, temperature, pressure, and other conditions, with medium oxidation capacity having the greatest impact.

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