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321/321H Stainless steel plate
321 stainless steel plates are part of the austenitic family of stainless steel. 321 is basically a 304 grade containing a stabilizer of titanium. Type 321 is a good choice for applications where heat is an issue. 321 can be used in applications up to 900°C where 304 is normally used up to 500°C. Grade 321 has excellent forming and welding characteristics. It does not polish well so would not be used for decorative applications. TW stocks a wide range of sizes in 321 stainless certified to AMS 5510, ASTM A 240, and SA 666.
Alloy 321H 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.
Product Details
Product Name
Stainless Steel Sheets/Plates
Thickness
0.3mm-3mm or 3mm-100mm
Width
20mm-1500mm or as required
Length
1500-6000mm or as required
Standard
ASTM/AISI ,AFNOR,BS,UNS,GB
Technique
Cold rolled/Hot rolled
Surface Treatment
2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, chequered, embossed, hairline, sand blast, Brush, etching, Hot rolled plate (HR), Cold rolled sheet (CR), SATIN (Met with Plastic Coated) etc
Thickness Tolerance
±0.01mm~ ±0.25mm
Material
Application
It is mainly used in chemical industry, petroleum, petrochemical and automotive industries.
MOQ
1 ton , We can accept sample order.
Shipment Time
Within 15-20 workdays after receiving deposit or workable L/C
Export Packing
Standard Export Seaworthy Package.Suit for all kinds of transport,or as required
Capacity
250,000 tons/year
321/321H
Chemical Composition:
| Element | 321 | 321H |
| Chromium | 17.00 min.-19.00 max. | 17.00 min.-19.00 max. |
| Nickel | 9.00 min.-12.00 max. | 9.00 min.-12.00 max. |
| Carbon | 0.08 | 0.04 min.-0.14 max. |
| Manganese | 2 | 2 |
| Phosphorus | 0.045 | 0.045 |
| Sulfur | 0.03 | 0.03 |
| Silicon | 0.75 | 0.75 |
| Titanium | 5 x (C + N) min.-0.70 max. | 4 x (C + N) min.-0.70 max. |
| Nitrogen | 0.1 | 0.1 |
| Iron | Balance | Balance |
Mechanical Properties :
Yield Strength
Ultimate Tensile
Elongation
Hardness
0.2% Offset
Strength
in 2 in.
psi (min.)
(MPa)
psi (min.)
(MPa)
% (min.)
(max.)
30,000
205
75,000
515
40
217 Brinell
Corrosion Resistance
Alloy 321 stainless steel plate exhibits good general corrosion resistance that is comparable to 304. It was developed for use in the chromium carbide precipitation range of 1800 – 1500°F (427 – 816°C) where un-stabilized alloys such as 304 are subject to intergranular attack.
The alloy can be used in most diluted organic acids at moderate temperatures and in pure phosphoric acid at lower temperatures and up to 10% diluted solutions at elevated temperatures. Alloy 321 resists polythionic acid stress corrosion cracking in hydrocarbon service. It can also be utilized in chloride or fluoride free caustic soltions at moderate temperatures.
Alloy 321 stainless steel plate does not perform well in chloride solutions, even in small concentrations, or in sulfuric acid service.
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