Lork ASTM A269/Uns S31000/ASTM A312 Steel Tube for Fluidized Bed Furnaces Piping 310 Stainless Steel Pipe

Product Description

Product Description

Introduction LORK is a special stainless steel manufacturer with 20 years of manufacturing experience.

310 (UNS S31000) is an austenitic stainless steel developed for use in high temperature corrosion resistant applications. The alloy resists oxidation up to 2010oF (1100oC) under mildly cyclic conditions.
Because of its high chromium and moderate nickel content, 310 is resistant to sulfidation and can also be used in moderately carburizing atmospheres.

The more severe carburizing atmospheres of thermal process equipment usually require nickel alloys such as 330 (UNS N08330). 310 can be utilized in slightly oxidizing, nitriding, cementing and thermal cycling applications, albeit, the maximum service temperature must be reduced. Alloy 310 also finds usage in cryogenic applications with low magnetic permeability and toughness down to -450oF (-268oC). When heated between 1202 - 1742oF (650 - 950oC) the alloy is subject to sigma phase precipitation. A solution annealing treatment at 2012 - 2102oF (1100 - 1150oC) will restore a degree of toughness.

Stainless Steel 310 Applications
Kilns Heat Exchangers Radiant Tubes Muffles, retorts, annealing covers Tube hangers for petroleum refiing adn steam boilers Coal gasifier internal components Saggers Furnace parts, conveyor belts, rollers, oven linings, fans Food processing equipment Cryogenic structures 310 Stainless Steel Standards ASTM........A 240
ASME........SA 240
AMS..........5521
310 Stainless Steel Corrosion Resistance Wet Corrosion
Alloy 310 is not designed for service in wet corrosive environments. The high carbon content, which is present to enhance creep properties, has a detrimental effect on aqueous corrosion resistance. The alloy is prone to intergranular corrosion after long term exposure at high temperatures. However, due to its high chromium content (25%), Alloy 310 is more corrosion resistant than most heat resistant alloys.
High Temperature Corrosion
The high chromium (25%) and silicon (0.6%) content of Alloy 310 make it more resistant to high temperature corrosion in most in-service environments. Operating temperatures are listed below.
Oxidizing conditions (max sulfur content - 2 g/m3)
1922°F (1050°C) continuous service
2012°F (1100°C) peak temperature
Oxidizing conditions (max sulfur greater than 2 g/m3)
1742°F (950°C) maximum temperature
Low oxygen atmosphere (max sulfur content - 2 g/m3)
1832°F (1000°C) maximum temperature
Nitriding or carburizing atmospheres
1562 - 1742°F (850 - 950°C) maximum
The alloy does not perform as well as Alloy 600 (UNS N06600) or Alloy 800 (UNS N08800) in reducing, nitriding or carburizing atmospheres, but it does outperform most heat resistant stainless steels in these conditions.
310 Stainless Steel Chemical Composition

Element	310
Cr	24.0-26.0
Ni	19.0-22.0
C	0.25 max
Mn	2.0 max
P	0.045 max
S	0.03 max
Si	1.5 max

310 Stainless Steel Mechanical Properties
Mechanical property requirements for annealed product as specified in ASTM A240 and ASME SA240

Yield Strength		Ultimate Tensile Strength		Elongation	Hardness
Psi(min)	MPa	Psi(min)	MPa	% (min)	(max)
35,000	245	8,000	500	45	217 (HB)

321H Stainless Steel Physical Properties

Density	0.285 lbs/in37.89 g/cm3
Thermal Conductivity 200°F (100°C)	8.0 BTU/hr/ft2/ft/°F10.8 W/m-°K
Specific Heat	0.12 BTU/lb-°F (32 - 212°F)502 J/kg-°K (0 - 100°C)
Melting Range	2470 - 2555°F1354 - 1402°C
Modulus of Elasticity	28.5 x 106 psi196 GPa
Electrical Resistivity	30.7 Microhm-in at 68°C78.0 Microhm-cm at 20°C

Available Sizes And Specifications

310 stainless steel pipe sizes and specifications
Grade	310
Stainless steel seamless pipe	Outside diameter: 4.0 - 1219mm, Thickness: 0.5 -100mm,Length: 24000mm
Stainless steel welded pipe	Outside diameter: 6.0 - 2800mm, Thickness: 0.3 -45mm, Length: 18000mm
Stainless steel capillary pipe	Outside diameter: 0.4 - 16.0mm, Thickness: 0.1 -2.0mm, Length: 18000mm
Stainless steel welded sanitary pipe	Outside diameter:8.0- 850mm, Thickness: 1.0 -6.0mm
Stainless steel seamless sanitary pipe	Outside diameter: 6.0- 219mm, Thickness: 1.0 -6.0mm
Stainless steel square pipe	Side Length: 4*4 - 300*300mm, Thickness: 0.25 - 8.0mm, Length: 18000mm
Stainless steel rectangular pipe	Side Length: 4*6 - 200*400mm, Thickness: 0.25 - 8.0mm, Length: 18000mm
Stainless steel coil pipe	Outside diameter: 0.4 - 16mm, Thickness: 0.1 - 2.11mm
Standard	American Standard: ASTM A312, ASME SA269, ASTM A269, ASME SA213, ASTM A213 ASTM A511 ASTM A789, ASTM A790, ASTM A376, ASME SA335, B161, SB163, SB338, SB667/668 Germany Standard: DIN2462.1-1981, DIN17456-85, DIN17458-85· European Standard: EN10216-5, EN10216-2 Japanese Standard: JIS G3463-2006, JISG3459-2012 Russian Standard: GOST 9941-81

Fabrication Data 310 can be easily welded and processed by standard shop fabrication practices.
Cold Forming The alloy is quite ductile and forms in a manner very similar to 316. Cold forming of pieces with long-term exposure to high temperatures is not recommended since the alloy is subject to carbide precipitation and sigma phase precipitants.
Hot Forming Heat uniformly at 1742 - 2192°F (950 - 1200°C). After hot forming a final anneal at 1832 - 2101°F (1000 - 1150°C) followed by rapid quenching is recommended.
Welding 310 can be readily welded by most standard processes including TIG, PLASMA, MIG, SMAW, SAW and FCAW.

Surface Treatment

Detection
Processing
Packaging & Shipping
Company Profile
FAQ
Q1: Do you accept the trial order ?
A1: Yes,if we have the exactly size in stock.we can delivery even 1 piece/meter .
Q2: Can I have free sample before making orders?
A2: Yes,we can supply free sample as requirement,but buyer needs to pay the freight charges ,the freight fee will return to buyer after making order.
Q3: How do you control the quality ?
A3: MTC and PMI will be sent before shipment,any 3rd party inspection if need .
Q4: How about your delivery time ?
A4: Generally delivery time is 15 working days .
Q5: How can I quickly get the price list ?
A5: Directly click "chat now" or send us email with detail specifications,you will get the official price list in 1 hour .

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