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Corrosion Resistant Alloy Line Pipes Data

 

1. Chemical Composition

Material
Chemical Composition (mass%)
C
Cr
Ni
Mo
W
Cu
Ti
N
PREW *
13CrS
max. 0.03
11.5-13.5
4.5-7.0
2.0-3.0
-
-
0.01-0.50
-
-
DP8
(UNS S31803)
max. 0.03
21.0-23.0
4.5-6.5
2.5-3.5
-
-
-
0.08-0.20
min. 34
DP3W
(UNS S39274)
max. 0.03
24.0-26.0
6.0-8.0
2.5-3.5
1.5-2.5
0.20-0.80
-
0.24-0.32
min. 40

* Pitting Resistance Equivalent with Tungusten = Cr+3.3(Mo+0.5W)+16N

 

2. Mechanical Properties

Material
Temperature
(deg.C)
Yield Strength
(MPa)
Tensile Strength
(MPa)
Hardness
(HV)
13CrS
25
min. 550
min. 750
max. 310HV
100
min. 540
min. 690
-
DP8
(UNS S31803)
25
min. 450
min. 640
max. 28HRC
100
min. 380
min. 575
-
DP3W
(UNS S39274)
25
min. 550
min. 800
max. 32HRC
100
min. 480
min. 725
-

 

 

3. Thermal Properties

Material
Temperature
(deg.C)
Young's Modulus
(GPa)
Coefficient of
Thermal Exp.
(10-6/deg.C)
Specific Heat
(J/kg・.deg.C)
Specific
Gravity
13CrS
25
201
10.7
448
7.79
100
199
492
11.1
200
192
527
DP8
(UNS S31803)
25
203
13.4
465
7.85
100
196
494
14.0
200
187
525
DP3W
(UNS S39274)
25
204
13.2
498
7.85
100
199
536
13.6
200
191
574

 

 

4. Material Selection Guidline

 

 


 
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