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321 Stainless Steel

321 Stainless Steel

Place of Origin : Zhejiang,China
Brand Name : X&FSTEEL
Model Number : 321
Certification : China Classification Society Certification, ISO9001 Quality System Certification
Packaging Details : Wrapped with woven bag package
Delivery Time : The delivery time is according to the order
Payment Terms : 30%T/T
MOQ : 2 tons
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Introduction

GB:0Cr18Ni10Ti

ASTM321S32100TP321

JISSUS321

BS EN304S12321920

DIN ENX10CrNiTi189

Features

321 stainless steel with Ti which exists as a stabilizing element , but it is also hot steel, in terms of high temperature is better than 316L, 321 stainless steel at different concentration and different temperature of organic acid and inorganic acid, especially in oxidizing medium has good abrasion resistance, Used in the manufacture of wear-resistant acid container and wear-resisting lining equipment and pipelines.

Type 321 stainless steel is Ni - Cr - Ti austenitic stainless steel, its performance is very similar with 304, but due to join the metal titanium, making it has better resistance to intercrystalline corrosion resistance and high temperature strength. Due to add metal titanium, making them effective control the formation of chromium carbide.

321 stainless steel has excellent high temperature stress rupture and high temperature creep resistance,stress mechanical properties are better than 304 stainless steel.

Applications

Applied to high grain boundary corrosion resistance requirements of chemical industry, coal, oil field the outdoor machine,building materials heat-resistant parts and heat treatment are difficult parts.

1 .Oil combustion exhaust pipe

2 . engine exhaust pipe

3 . Boiler enclosure, heat exchanger, heating components

4 . Deadened the noise of diesel engine parts

5 . Boiler and Pressure Vessels

6 . Chemical transport vehicle

7 . Expansion joint

8 . Burning furnace pipe and dryers with spiral welded pipe

Tolerance


Level

Permitted error

D1

±1.5%Mini:±0.75 mm

D2

±1.0%Mini:±0.50 mm

D3

±0.75%Mini:±0.30 mm

D4

±0.50%Mini:±0.10 mm

Chemical Component

C0.08

Si1.00

Mn2.00

S0.030

P0.035

Cr17.0019.00

Ni9.0012.00

Ti5×C%

Mechanical Property

Tensile Strengthσb (MPa)520

Yield Strengthσ0.2 (MPa)205

Elongation Rate δ5 (%)≥40

Percentage reduction of areaψ (%)≥50

Hardness≤187HB;≤90HRB;200HV

Heat Treatment Regime And Metallographic Structure


Heat treatment regime1)Solid solution9201150℃rapid cooling; 2)Stabilizing treatment can be performed according to the buyer's requirement,Heat treatment temperature850930℃,But it must be indicated in the contract.3Solid solution temperature cannot exceed1066℃,more than words, stabilizing treatment, must be conducted to prevent the precipitation of chromium.

Metallographic structureAustenitic.

Delivery statusGeneral with heat treatment state delivery, its heat treatment type indicated in the contract; Not specified, the press is not heat treatment state delivery.


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