439 Stainless Steel

On the basis of the common ferrite material (430), the content of C of 439 steel was reduced, and the stability elements such as Ti were added to improve the inter-crystalline corrosion resistance,
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Product Details

On the basis of the common ferrite material (430), the content of C of 439 steel was reduced, and the stability elements such as Ti were added to improve the inter-crystalline corrosion resistance, formability and weldability of the steel. Compared with 304 steel, its elongation is lower (about 30%), but its strength and corrosion resistance are similar, and its corrosion resistance is better than 200 series materials.

Standard

Grade

Chemical Composition(%)



C

Si

Mn

P

S

Cr

Ni

N

Ti











ASTM

439

0.03

1.00

1.00

0.04

0.03

17.0-19.0

≤0.5

≤0.04

0.2+4(C+N)
     -1.10

DIN

1.4510

0.05

1.00

0.00

0.04

0.015

16.0-18.0

-

-

4(C+N)
     -0.80


Standard

Mechanical Properties


Tensile Strength

Yield Strength

Elongation

Hardness


N/m㎡

(≤)N/m㎡

(≥)%

(≤)HV

ASTM

≥415

205

22

180

DIN

420-600

230

23



The main application

Decorative board for elevators and escalators

Architectural decorative panels, such as decorative structural parts and structural pipes

Automotive exhaust system components

Washing machine inner cylinder


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