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July 26, 2010

Duplex Stainless Steel Property

Duplex stainless steel castings, sorted by standard.

Duplex Stainless steel has two phase microstructure consisting of grains of Ferritic and Austenitic stainless steel. It has a better strength and corrosion resistance property than stainless steel 304/316. Duplex stainless steels have lower nickel and molybdenum contents than their austenitic counterparts of similar corrosion resistance.

 

Stainless Steel Grade
Chemistry Content  (%)
C
Mn
Si
P
S
Ni
Cr
Mo
N
Cu
Others
1A (CD4MCu)
0.04
1.00
1.00
0.04
0.04
4.75~6.0
24.5~26.5
1.75~2.25
2.75~3.25

1B

(CD4MCuN)

 

0.04
1.00
1.00
0.04
0.04
4.7~6.0
24.5~26.5
1.70~2.30
0.1~0.25
2.7~3.3

1C

(CD3MCuN)

 

0.03
1.20
1.10
0.03
0.03
5.6~6.7
24.0~26.7
2.90~3.80
0.22~0.33
1.4~1.9
ANC-21
0.05
0.75
0.75
0.05
0.05
4.75~6.0
25.0~27.0
1.75~2.25
≤0.10
2.75~3.25
2A(CE8MN)
0.08
1.00
1.50
0.04
0.04
8.0~11.0
22.5~25.5
3.0~4.5
0.1~0.30
3A(CD6MN)
0.06
1.00
1.00
0.04
0.04
4.0~6.0
24.0~27.0
1.75~2.5
0.15~0.25
4A (CD3MN)
0.03
1.50
1.00
0.04
0.02
4.5~6.5
21.0~23.5
2.5~3.5
0.1~0.30
≤1.00
1.4470
0.03
2.00
1.00
0.035
0.025
4.5~6.5
21.0~23.0
2.5~3.5
0.12~0.20
5A

(CE3MN)

0.03
1.50
1.00
0.04
0.04
6.0~8.0
24.0~26.0
4.0~5.0
0.1~0.30
1.4469
0.03
1.00
1.00
0.035
0.025
6.0~8.0
25.0~27.0
3.0~5.0
0.12~0.22
≤1.3
1.4468
0.03
2.00
1.00
0.035
0.025
5.5~7.0
24.5~26.5
2.5~3.5
0.12~0.25

6A

(CD3MWCuN)

 

0.03
1.00
1.00
0.03
0.025
6.5~8.5
24.0~26.0
3.0~4.0
0.2~0.30
0.5~1.0
W :0.5~1.0
1.4517
0.03
1.50
1.00
0.035
0.025
5.0~7.0
24.5~26.5
2.5~3.5
0.12~0.22
2.75~3.5
1.4417
0.03
1.50
1.00
0.03
0.020
6.0~8.5
24.0~26.0
3.0~4.0
0.15~0.25
1.00
W:≤1.0

 

Stainless Steel Grade
Refer to Standard

Heat

treatment

Mechanical Property
Impact Testing
σb
σ0.2
δ5
HB
MPa
MPa
%
1A(CD4MCu)
ASTM A890-03
Solution Treatment
690
485
16
1B

(CD4MCuN)

690
485
16
1C

(CD3MCuN)

690
450
25
ANC-21
 
700
500
18
2A(CE8MN)
ASTM A890-03
655
450
25
3A(CD6MN)
655
450
25
4A (CD3MN)
620
415
25
1.4470
EN10283-98
600
420
20
KV 30(J)
5A

(CE3MN)

ASTM A890-03
690
515
18
1.4469
EN10283-98
650
480
22
KV 50(J)
1.4468
650
480
22
KV 50(J)
6A

(CD3MWCuN)

ASTM A890-03
690
450
25
1.4517
EN10283-98
650
480
22
KV 50(J)
1.4417
650
480
22
KV 50(J)
Material

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