SA312/249 TP304/Tp347h Seamless Stainless Steel Tubes Made for Reliable Performance

• Customization: Available
• Application: Automotive Industry, Chemical Industry, Food Industry, Oil and Gas Industry, Pharmaceutical Industry
• Certification: CE, ISO9001
• Model NO.: SA312/249 TP304/TP347H Seamless Stainless Steel Tu
• Length: 1-50m
• Material: SA213/A249/A269/A312/A358
• Outer Diameter: 3.18-810mm
• Type: Seamless Pipe
• Wall Thickness: 0.2-40mm
• Specification1: SA213/A249/A269/A312/A358
• Technique: Hot Rolled/Cold Drawn
• Shape: Round/Customized
• Process: Polished/Solution Treatment
• Condition: Hot Finished/Cold Finished
• End: Plain End/Bevel End
• Usage: Heat Transfer
• Test: BV, SGS Is Available
• Stock: Size Can Customized
• Processing: Customized
• Thickness: 1-150mm
• Used: Factory, Decoration, Food
• Packing: Standard Export Packing
• Delivery Time: 10-30 Working Days
• Size: 1/4"-4"
• Transport Package: Woven Bag/Wooden Case
• Specification: SCH 5S-SCH160
• Trademark: EZS
• Origin: China
• Production Capacity: 10, 000, 000 Kgs/Year

Product Description

Product Description

  

SA312/249 TP304/TP347H SMLS Stainless Steel Pipe

1. Chemical Composition

Grade	Chromium (Cr)	Nickel (Ni)	Carbon (C)	Manganese (Mn)	Silicon (Si)	Columbium + Tantalum (Cb + Ta)
TP304	18.0 - 20.0%	8.0 - 10.5%	≤0.08%	≤2.00%	≤1.00%	-
TP347H	17.0 - 19.0%	9.0 - 13.0%	0.04 - 0.10%	≤2.00%	≤1.00%	10 x C - 1.10%

 

 

 

 

 

2. Mechanical Properties

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
TP304	≥515	≥205	≥40
TP347H	≥515	≥205	≥30

 

 

 

 

 

3. Corrosion Resistance

Grade	General Corrosion	Intergranular Corrosion	High - Temperature Corrosion
TP304	Good in most environments, less resistant in high - chloride environments	Susceptible in welded joints with high - carbon content	Up to about 870°C
TP347H	Good corrosion resistance in various environments	Excellent due to columbium stabilization, even in welded components	High - temperature resistance up to around 980°C, suitable for creep - resistant applications

 

 

 

 

 

4. Machinability

Grade	Machining Difficulty	Tooling Requirements	Considerations
TP304	Fair	Carbide - tipped tools preferred	Work - hardening occurs, need to control cutting speed and chip formation
TP347H	Similar to TP304, but may be slightly more challenging due to columbium addition	Carbide - based tools	Columbium can increase hardness, may require more aggressive tooling and careful adjustment of cutting parameters

 

 

 

 

 

5. Applications

Grade	Typical Applications
TP304	Heat exchangers in power plants and HVAC systems, food and beverage industry equipment, automotive exhaust systems and some engine components
TP347H	High - temperature applications in power generation (such as superheater tubes in boilers), petrochemical industry reactors, and furnace components where creep resistance and high - temperature stability are crucial

 

 

 

   

 

Detailed Photos