253MA Seamless Stainless Steel Tube is a tube which features seamless construction, excellent heat and corrosion resistance, and long-lasting durability. ① STANDARD: ASTM A213/ EN10216-5/ ASTM A249/ ASTM A269/EN10216-5/ GOST 9940 /GOST 9941...② OD RANGE : 6-257MM③ THICKNESS RANGE: 1-35 MM
| Cr | Ni | C | Si | Mn | P | S | N | Ce | Fe | 
| 20.00-22.00 | 10.00-12.00 | 0.05-0.10 | 1.40-2.00 | ≤0.08 | ≤0.04 | ≤0.03 | 0.14-0.20 | 0.03-0.08 | Balance | 
| Grade | Tensile Strength ksi(MPa) | Yield Strength ksi(MPa) | Elongation in 2", % | Hardness Brinell | Hardness Rockwell | 
| 253MA | ≥87(600) | ≥45(310) | ≥40 | ≤217HBW | ≤95HRB | 
	
| Standard | Outside Diameter | Thickness | Length | ||||
| ASTM A312 | 
 | O.D. ≦ | 48.26mm | +0.40mm, | -0.80mm | Nominal Thickness ±12.5% | 0mm to +6mm | 
| 48.26mm < | O.D. ≦ | 114.3mm | ±0.80mm, | 
 | |||
| 114.3mm < | O.D. ≦ | 219.08mm | +1.60mm, | -0.80mm | |||
| 219.08mm < | O.D. ≦ | 457.2mm | +2.40mm, | -0.80mm | |||
| 457.2mm < | O.D. ≦ | 660.4mm | +3.20mm, | -0.80mm | |||
| 660.4mm < | O.D. ≦ | 836.6mm | +4.00mm, | -0.80mm | |||
| 863.6mm < | O.D. | 
 | +4.80mm, | -0.80mm | |||
	
Seamless 253MA Stainless Steel Tube ,also known as UNS S30815 seamless stainless steel tube too, is a high-temperature alloy that combines excellent service properties with ease of fabrication. Let’s explore its applications across various industries:
Remember that 253MA is a versatile material, offering oxidation resistance, creep strength, and toughness.
	
Despite its lean nickel content, 253MA offers an outstanding combination of creep strength and high resistance to oxidation, sulphidation and erosion/abrasion at extremely high temperatures. This makes the alloy more economical than most heat resistant alloys.
The high heat resistant properties of 253MA are obtained by the tight control of micro alloy additions. Whilst the benefit of creep rupture strength is down to the combination of nitrogen, carbon and cerium, its superior oxidation resistance is a result of the combination of cerium and silicon.
Its strength at these temperatures is higher than that of alternatives such as Grade 310.
TP316Ti /1.4571/UNSS31635 Seamless Stainless Steel Tube is a high-performance tubing solutions known for their excellent resistance to corrosion, heat, and mechanical stress. These tubes are specially alloyed with titanium to enhance strength and stability at elevated temperatures, making them suitable for demanding environments. ① STANDARD: ASTM A213/ EN10216-5/ ASTM A249/ ASTM A269/ GOST 9940 /GOST 9941...② OD RANGE : 6-257MM③ THICKNESS RANGE: 1-35 MM
TP347H Seamless Stainless Steel Tube are high-performance austenitic stainless steel tubes stabilised with niobium, specifically designed for elevated temperature applications and enhanced creep resistance. ① STANDARD: ASTM A213/EN10216-5/ ASTM A249/ ASTM A269/ GOST 9940 /GOST 9941...② OD RANGE : 6-257MM③ THICKNESS RANGE: 1-35 MM
TP321 Seamless Stainless Steel Tube is a titanium-stabilized austenitic tube known for their excellent resistance to intergranular corrosion and superior high-temperature strength. These tubes are ideal for applications requiring stability at elevated temperatures, such as in heat exchangers, aerospace systems, and petrochemical industries. ① STANDARD: ASTM A213/ EN10216-5/ASTM A249/ ASTM A269/ GOST 9940 /GOST 9941...② OD RANGE : 6-257MM③ THICKNESS RANGE: 1-35 MM
TP347H Seamless Stainless Steel Pipe are high-performance austenitic stainless steel tubes stabilised with niobium, specifically designed for elevated temperature applications and enhanced creep resistance. ① STANDARD: ASTM A312/ ASTM A249/ ASTM A269/ EN10216-5/GOST 9940 /GOST 9941...② OD RANGE : 6-1016 MM③ THICKNESS RANGE: 1-65 MM
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