ASTM A312 Austenitic Chromium Nickel Stainless Steel Tp309 Heat Exchanger Tube Manufacturer

• After-sales Service: an
• Warranty: Wait Every Day
• Type: Seamless
• Technique: Cold Rolled
• Material: Stainless Steel
• Surface Treatment: Polished
• Model NO.: TP309
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• End: Be/PE
• Od(mm): 6-1016
• Length: 5-7.2meter
• Transport Package: Woven Bags
• Trademark: xintongda
• Origin: Wenzhou
• HS Code: 73044990
• Production Capacity: 50000pieces/Year

Product Description

TP309/TP309S/TP309H(UNS30900) SEAMLESS STAINLESS STEEL PIPE AND TUBE

Chemical Composition

Grade	C	SI	Mn	Cr	Ni	P	S	Fe
309	≤0.2	≤00.75	≤02	22.0-24.0	12.0-15.0	≤00.045	≤00.03	Balance
TP309S	≤0.08	≤00.75	≤02	22.0-24.0	12.0-15.0	≤00.045	≤00.03	Balance
TP309H	0.04.-0.10	≤00.75	≤02	22.0-24.0	12.0-15.0	≤00.045	≤00.03	Balance

Mechanical Properties

Grade	Tensile Strength Ksi(Mpa)	Yield Strength Ksi(Mpa)	Elongation in 2" or 50 mm, %	Hardness Brinell/Vickers	Hardness Rockwell
TP309S	≥75(515)	≥30(205)	≥35	≤192HBW/200HV	≤90HRB
TP309H	≥75(515)	≥30(205)	≥35	≤192HBW/200HV	≤90HRB

Applications

• Boiler baffles
• Furnace components
• Oven linings
• Fire box sheets
• Other high temperature containers.

Material Summary

TP309 Stainless Steel Tubing are austenitic chromium-nickel ss that provide excellent corrosion resistance and heat resistance plus good strength at room and elevated temperatures. The lower nickel content of 309 tubes improves resistance to sulfur attack at high temperatures. The high chromium and nickel content of SUS 309 Pipe & tubes provides comparable corrosion resistance, superior resistance to oxidation, and the retention of a larger fraction of room temperature strength than the common austenitic 304.

The steel resists oxidation up to 1900°F (1038°C) under non-cyclic conditions
Because of its high chromium and low nickel content, 309 can be utilized in sulfur containing atmospheres up to 1832°F (1000°C). The steel is not recommended for use in highly carburizing atmospheres since it exhibits only moderate resistance to carbon absorption. 309 can be utilized in slightly oxidizing, nitriding, cementing and thermal cycling applications, albeit, the maximum service temperature must be reduced.