General Information
Chemical Composition
Physical Properties
Mechanical Properties
General Information
Alloy 321 (UNS S32100) is titanium stabilized austenitic stainless steel plate with good general corrosion resistance. It has excellent resistance to intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 800 – 1500°F (427 – 816°C). The alloy resists oxidation to 1500°F (816°C) and has higher creep and stress rupture properties than alloys 304 and 304L. It also possesses good low temperature toughness.Alloy 321H (UNS S 32109) stainless steel plate is the higher carbon (0.04 – 0.10) version of the alloy. It was developed for enhanced creep resistance and for higher strength at temperatures above 1000oF (537°C). In most instances, the carbon content of the plate enables dual certification.Alloy 321 stainless steel plate cannot be hardened by heat treatment, only by cold working. It can be easily welded and processed by standard shop fabrication practices.
Standard Inventory Specifications
- UNS S32100
- UNS S32109
- AMS 5510
- AMS 5645
- ASTM A 167
- ASTM A 240
- ASTM A 276
- ASTM A 479
- ASME SA 167
- ASME SA 240
Common Trade Names
- ATI 321 (™ Allegheny Technologies)
Common Applications of 321
- Aircraft exhaust stacks
- Manifolds
- Chemical processing equipment
- Welded equipment
- Jet engine parts
Chemical Composition
321 Chemical Composition
Element
Percent by Weight
C
Carbon
8.00%
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
Ti
5x(C+N) min to 0.70 max
4.0%
N
Nitrogen
0.1
Fe
Iron
Balance
Physical Properties
321 Physical Properties
| Physical property | Value |
| Density | 0.28 lb/in3 |
| Melting Range | 2550 – 2635 °F |
| Specific Heat Capacity at 70°F | 0.12 Btu/lb/°F |
| Thermal Conductivity at 212°F | 9.3 Btu/hr-ft-°F |
| Poisson’s Ratio | |
| Elastic Modulus | 28.0 x 10６psi |
Mechanical Properties
Mechanical Properties and Yield Strength of 321
| 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 |
|
321 Seamless Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Sanitary Tube
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
Size: OD: Φ8-Φ850mm; WT:…
Introduction: Wisine produces sanitary tubes that are widely applicable to food & beverage industry, pharmaceutical industry…
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321 Thick-walled Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Welded Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Square Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Rectangle Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Capillary Tube
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Coil Tube
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Elbow
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Flange
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Tee
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
Outer Diameter: DN15 – DN750…
Wall Thickness: Sch5S-Sch160…
Classification: Straight tee, reducing tee…
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321 Cross
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
Outer Diameter: DN15 – DN1200…
Wall Thickness: Sch5S-Sch160…
Classification: Straight cross, reducing cross…
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321 Reducer
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
Outer Diameter: DN15 – DN500…
Wall Thickness: Sch5S-Sch160…
Classification: Concentric reducer, eccentric reducer…
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321 Pipe Cap
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
Outer Diameter: DN15 – DN1200…
Wall Thickness: Sch5S- Sch160…
Classification: Hemispherical cap, elliptical/oval cap, dish cap, spherical cap…
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321 Round Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Flat Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Angle Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Square Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Hexagon Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Channel Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Sheet
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Plate
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Coil
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Strip
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Wire
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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321 Wire Rod
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
Diameter: Hot rolled wire rod:…
Weight: ≤500Kg per roll
Tolerance: H9, H11
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321 Wire Rope
Standard: ASTM, JIS, DIN, EU…
Grade: 321…
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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