General Information
Chemical Composition
Physical Properties
Mechanical Properties
General Information
347 stainless steel has slightly improved corrosion resistance over type 321 stainless steel in strongly oxidizing environments. Type 347 is stabilized with columbium, it is preferable for aqueous and low temperature environments due to its good resistance to intergranular attack. Both 347 and 321 offer good resistance to polythionic acid stress corrosion cracking, encountered in oil refineries. The high temperature oxidation resistance of 347 is similar to that of 304 stainless steel. Useful to 1500°F.
Standard Inventory Specifications
- AMS 5512,
- AMS 5646,
- AMS 5680,
- ASME SA 240,
- ASTM A 269,
- ASTM A 479,
- ASTM A262 Practice E,
- MSRR 5632, PWA 300,
- PWA F17 LCS,
- UNS S34700,
- UNS S34709, W. Nr./EN 1.4550
Common Applications of 347
- Oil Refineries
- Fluid catalytic cracking units (FCC)
- Firearms production
- Hanger rods
- Recuperator tube sheets, shell, supports
- Especially where temperatures exceed 550°F and resistance to sulfidation is needed
- Fired heater tubes
- Distributor trays and thermowells
- Equipment in and around reactors (good resistance to polythionic acid)
Chemical Composition
347 Chemical Composition
Element
Percent by Weight
C
Carbon
0.080%
Mn
Manganese
200.00%
P
Phosphorous
4.50%
S
Sulfur
0.03
Si
Silicon
75.00%
Cr
Chromium
17.00-19.00
Ni
Nickel
9.00-12.00
Nb
Columbium and
10xC min to 1.00 max
Ta
Tantalum
N
Nitrogen
10.00%
Fe
Iron
Balance
Physical Properties
Physical properties for Type 347 stainless steel
| Property | Data | |
| Density, lb/in3 | 0.288 | |
| Modulus of Elasticity, psi | 28.0 x 106 | |
| Coefficient of Thermal Expansion, 68-212˚F, /˚F | 9.3 x 10-6 | |
| Thermal Conductivity, Btu/ft hr ˚F | 9.2 | |
| Specific Heat, Btu/lb ˚F | 0.12 | |
| Electrical Resistivity, Microohm-in | ||
Mechanical Properties
Mechanical Properties and Yield Strength of 347
| Property | Type 321 | Type 347 | |
| Yield Strength, 0.2% Offset psi MPa |
30,000 205 |
30,000 205 |
|
| Ultimate Tensile Strength, psi MPa |
75,000 515 |
75,000 515 |
|
| Percent Elongation in 2 in. or 51 mm | 40.0 | 40.0 | |
| Hardness, Max., Brinell (Plate) RB (Sheet & Strip) |
217 95 |
201 92 |
|
347 Seamless Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: OD: Φ4-Φ1219mm; WT:…
Introduction: Wisine its production capacity of stainless steel seamless pipe, roughly 2100 tons per month. As per your requirement…
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347 Sanitary Tube
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: OD: Φ8-Φ850mm; WT:…
Introduction: Wisine produces sanitary tubes that are widely applicable to food & beverage industry, pharmaceutical industry…
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347 Thick-walled Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: OD: Φ10-Φ1219mm; WT:…
Introduction: Thick-walled stainless steel pipe, also named stainless steel hollow bar, are usually used for mechanical applications or…
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347 Welded Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: OD: Φ6-Φ2800mm; WT:…
Introduction: Wisine produces welded stainless steel pipe in different shapes: round, square and rectangle. In comparison with seamless pipe…
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347 Square Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: Side Length: 4×4-300×300mm…
Introduction: As per your requirement, stainless steel square pipe can be made into welded stainless steel square pipe or…
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347 Rectangle Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: Side Length: 4×6-200×400…
Introduction: Stainless steel rectangle pipe is hollow stainless steel long product and can be classified into seamless and welded…
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347 Capillary Tube
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: OD: Φ0.4-Φ16.0mm; WT:…
Introduction: Wisine produces stainless steel capillary with different finishes for your option. Quite common in our international markets…
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347 Coil Tube
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: OD: Φ0.4-Φ16mm; WT:…
Introduction: Stainless steel coil tubes refer to those tubes with diameter ranging from 0.5mm to 20mm and wall thickness from…
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347 Elbow
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Outer Diameter: DN15 – DN600…
Wall Thickness: Sch5S- Sch160…
Classification: 45° elbow, 90° elbow, 180° elbow, long radius elbow, short radius elbow…
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347 Flange
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Outer Diameter: DN6 – DN750…
Wall Thickness: Sch5S-Sch160S…
Classification: SW (Socket Welding) flange, WN (Welding Neck) flange, SO (Slip-On) flange…
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347 Tee
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Outer Diameter: DN15 – DN750…
Wall Thickness: Sch5S-Sch160…
Classification: Straight tee, reducing tee…
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347 Cross
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Outer Diameter: DN15 – DN1200…
Wall Thickness: Sch5S-Sch160…
Classification: Straight cross, reducing cross…
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347 Reducer
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Outer Diameter: DN15 – DN500…
Wall Thickness: Sch5S-Sch160…
Classification: Concentric reducer, eccentric reducer…
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347 Pipe Cap
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Outer Diameter: DN15 – DN1200…
Wall Thickness: Sch5S- Sch160…
Classification: Hemispherical cap, elliptical/oval cap, dish cap, spherical cap…
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347 Round Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: Diameter: 2mm – 600mm…
Introduction: Stainless steel round bars are categorized as both long products and bar materials. SS round bar is long stainless steel product…
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347 Flat Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: Thickness: 0.5mm – 200mm…
Introduction: Stainless steel flat bars are of rectangle shape with root face (or round edges) and they can be semi-finished or finished…
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347 Angle Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: Equal Angle Bar Dimensions…
Introduction: Stainless steel angle bars are L-shape bars with two side widths perpendicular to each other. The two widths can be equal…
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347 Square Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: Dimensions: 2mmx2mm – …
Introduction: Stainless steel square bars are long stainless steel products with its cross section as square. At Wisine, we produce SS square…
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347 Hexagon Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: Dimension: 3mm – 180mm…
Introduction: Stainless steel hex bar is solid stainless steel long product with its cross section as hexagonal. Wisine produce stainless…
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347 Channel Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: Hot Rolled: 40mmx80mmx…
Introduction: Stainless steel channel bar is stainless steel long product with its section as U shape. At Wisine, apart from stainless steel…
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347 Sheet
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: Thickness: ≤ 5mm…
Introduction: In Wisine, we refer to thickness below 5mm as stainless steel sheets and thickness above 5mm as SS plates…
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347 Plate
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: Thickness: ≥ 5mm…
Introduction: In Wisine, we regard thickness above (includes) 5mm as stainless steel plates. Our stainless steel plates are hot rolled…
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347 Coil
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: Width: ≥ 610mm…
Introduction: Our stainless steel coils are primary quality coils from the origin of Baosteel, ZPSS, TISCO, JISCO, ATI, SMC, HAYNES…
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347 Strip
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: Width: ≤ 610mm…
Introduction: Stainless steel strip has its width less than 610mm, with its thickness ranging from 0.02mm to 6mm. For width over 610mm…
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347 Wire
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: Diameter: 0.02mm-25mm…
Introduction: Wisine produces high quality wire and stainless steel wire rope. Our annual production capacity is roughly 8000 tons…
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347 Wire Rod
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Diameter: Hot rolled wire rod:…
Weight: ≤500Kg per roll
Tolerance: H9, H11
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347 Wire Rope
Standard: ASTM, JIS, DIN, EU…
Grade: 347…
Size: Φ0.15mm-Φ50mm…
Introduction: Wisine produces high quality wire and stainless steel wire rope. Our annual production capacity is roughly 8000 tons…
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