Why choose stainless 321 grade?

Why choose stainless 321 grade?

06-13 117

Why choose stainless 321 grade?

 

Stainless Grade 321 steel is a kind of Chromium-Manganese-Nickel Austenitic stainless steel, its performance is very similar to grade 304, but 321 stainless has better resistance to grain boundary corrosion and bigger high-temperature strength because of the addition of metal titanium. The metallic titanium also help stainless 321 to controls the formation of chromium carbide  effectively.

 

Other equivalent stainless material with Grade 321

American Standard: S32100, TP321

Chinese Standard: 0Cr18Ni10Ti

Japanese Standard: SUS321

German Standard: X10CrNiTi189

UK Standard: 321920, 304S12

 

Chemical Components of Grade 321 stainless

Types

Standard

Grade

C

Mn

P

S

Si

Cr

Ni

N

Plate

Sheet

Strip

ASTM A240

321

0.08

2.0

0.045

0.035

0.75

17.0-19.0

9.0-12.0

0.1

Pipe

ASTM A312

TP321

0.08

2.0

0.045

0.03

1.0

17.0-19.0

9.0-12.0

0.1

 

Mechanical Properties of Grade 321 Stainless

Types

Standard

Grade

Tensile Strength (min)

Yield Strength

(min)

Elongation in 2in. or 50mm

(min, %)

Hardness

Plate

Sheet

Strip

ASTM A240

321

75ksi

515MPa

30ksi

205MPa

217

95HRBW

Weld Pipe

ASTM A312

TP321

75ksi

515MPa

30ksi

205MPa

-

-

SML Pipe<=3/8in

ASTM A312

TP321

75ksi

515MPa

30ksi

205MPa

-

-

SML Pipe>3/8in.

ASTM A312

TP321

70ksi

485MPa

25ksi

170MPa

-

-

 

 

Application of Grade 321 Stainless

321 Austenitic stainless steel has good corrosion resistance in the atmosphere, so it is widely used in the outdoor machines that require high corrosion resistance such as oil and petroleum, coal, power,  bridges and automobiles.

1. Petroleum waste gas combustion pipeline

2. Engine exhaust pipe

3. Boiler shell, heat exchanger, heating furnace parts

4. Silencer parts for diesel engines

5. Boiler and pressure vessel

6. Chemical truck

7. Expansion joint

8. Spiral welded pipes for furnace pipes and dryers

 

 

Shanghai All-Win Iron & Steel Company(AWISCO) can offer different 321 stainless steels such as plates, sheets, strips, welded pipes, seamless pipes, round bars, square bars, angles, H beams and Channels. Please feel free to contact by email info@allwinsteels.com


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