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UNS S30815 Stainless Steel Seamless Tubing , Heat Exchanger Tubes SS Seamless Pipes 3/4'' X 0.065'' X 20''

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UNS S30815 Stainless Steel Seamless Tubing , Heat Exchanger Tubes SS Seamless Pipes 3/4'' X 0.065'' X 20''

China UNS S30815 Stainless Steel Seamless Tubing , Heat Exchanger Tubes SS Seamless Pipes 3/4'' X 0.065'' X 20'' supplier
UNS S30815 Stainless Steel Seamless Tubing , Heat Exchanger Tubes SS Seamless Pipes 3/4'' X 0.065'' X 20'' supplier UNS S30815 Stainless Steel Seamless Tubing , Heat Exchanger Tubes SS Seamless Pipes 3/4'' X 0.065'' X 20'' supplier UNS S30815 Stainless Steel Seamless Tubing , Heat Exchanger Tubes SS Seamless Pipes 3/4'' X 0.065'' X 20'' supplier UNS S30815 Stainless Steel Seamless Tubing , Heat Exchanger Tubes SS Seamless Pipes 3/4'' X 0.065'' X 20'' supplier

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Product Details:

Place of Origin: CHINA
Brand Name: SPEZILLA
Certification: ISO9001:2008, PED 97/23/EC
Model Number: 253 MA, UNS S30815, 1.4835

Payment & Shipping Terms:

Minimum Order Quantity: Negotiation
Price: Negotiation
Packaging Details: BUNDLES BY FCL
Delivery Time: 10 DAYS
Payment Terms: T/T or L/C
Supply Ability: 1000 TONS / MONTH
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Detailed Product Description
Grade No.: 253 MA, UNS S30815, 1.4835 Certificate: EN10204 3.1
Outside Diameter: 6.35MM - 101.60MM Wall Thickness: 0.89MM - 3.05MM
Finish Surface: SOLUTION ANNEALED Specification: ASTM A213, ASME SA213

UNS S30815 Stainless Steel Seamless Tubing , Heat Exchanger Tubes SS Seamless Pipes 3/4'' X 0.065'' X 20''

 

 

 

Descriptions:

 

253MA is a grade combining excellent service properties at high temperatures with ease of fabrication. It resists oxidation at temperatures up to 1150°C and can provide superior service to Grade 310 in carbon, nitrogen and sulphur containing atmospheres.

 

253MA® is a trademark owned by Outokumpu Stainless AB. The standard grade designation covering this grade is UNS S30815. Other mills produce grades compliant with UNS S30815, including Sirius S15®.

 

253MA contains a fairly low nickel content, which gives it some advantage in reducing sulphide atmospheres when compared to high nickel alloys and Grade 310. The inclusion of high chromium, silicon, nitrogen and cerium contents gives the steel good oxide stability, high elevated temperature (creep) strength and excellent resistance to sigma phase precipitation.

 

The austenitic structure gives this grade excellent toughness, even down to cryogenic temperatures.

 

Advantages:

 

253 MA seamless stainless steel tube is an austenitic chromium-nickel steel alloyed with nitrogen and rare earth metals. The grade is characterized by:

 

1. High creep strength

 

2. Very good resistance to isothermal and, particularly, cyclic oxidation

 

3. Good structural stability at high temperatures

 

4. Good weldability

 

5. Maximum operating temperature is approx. 1150°C (2100°F)

 

 

Chemical Composition:

 

253 MA / S30815 / 1.4835 Seamless Stainless Steel Tube

Cr

Ni

C

Si

Mn

20.0-22.0 10.0-12.0 0.05-0.10 1.40-2.00 0.80 Max

P

S

N

Ce

Fe

0.040 Max 0.030 Max 0.14-0.20 0.03-0.08 Balance

 

Mechanical Properties:
 

253 MA / S30815 / 1.4835 Seamless Stainless Steel Tube
 

Specified Limits Minimum

Typical Range

Ultimate Tensile Strength, psi 87,000 90,000-114,000
.2% Offset Yield Strength, psi 45,000 45,000-69,000
Elongation in 2", % 40 42-70
Reduction of Area, % 50 -
Hardness Rockwell B - Rb 90

 

Heat Resistance:

 

Oxidation - excellent resistance to air, at temperatures up to 1100°C. At high temperatures the steel quickly forms a thin, highly adherent and elastic oxide. This oxide gives good protection even under cyclic conditions, much better than is the case for Grade 310. Best resistance is under non- cycling conditions.

Carburisation - Under oxidising conditions this grade can perform well, but alloys with higher nickel content are preferred if the atmosphere is reducing.

 

Sulphidation - good resistance to sulphur- bearing gases in an oxidising atmosphere, even if only traces of oxygen are present. Reducing gases prevent the protective oxide forming.

 

253MA has high strength at elevated temperatures so is often used for structural and pressure-containing applications at temperatures above about 500°C and up to about 900°C.

 

253MA will become sensitised in the temperature range of 425-860°C; this is not a problem for high temperature applications, but will result in reduced aqueous corrosion resistance.

 

Heat Treatment 253 MA / S30815 / 1.4835 Seamless Stainless Steel Tube:


Solution Treatment (Annealing)

 

Heat to 1050-1150°C and cool rapidly. It is recommended that the material be solution treated after 10-20% cold work to achieve maximum creep strength in service.

 

This grade cannot be hardened by thermal treatment.

 

Welding

 

Excellent weldability by all standard fusion methods. AS 1554.6 pre-qualifies welding of S30815 with matching Grade 22.12HT rods or electrodes. Grade 309 fillers can be used if lower creep strength can be tolerated. Pure argon shielding gas should be used.

 

Machining

 

As for other austenitic stainless steels, the machining requires sharp tools, slow speeds and heavy feeds.

 

Typical Applications of 253 MA / S30815 / 1.4835 Seamless Stainless Steel Tube:

 

Furnace components including burners, retorts, conveyor belts, fans, jigs and baskets, rollers, walking beams, radiant tubes, electric heater elements, refractory anchors, hoods, flues, grates, expansion bellows. Petrochemical and refinery tube hangers.

 

UNS S30815 Stainless Steel Seamless Tubing , Heat Exchanger Tubes SS Seamless Pipes 3/4'' X 0.065'' X 20''

Contact Details
Spezilla Tube Co., Ltd.

Contact Person: Will Ma

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