Common base material and chemical composition(wt.%)
|
||||||||||||||
Mat
Type
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Mo
|
Ni
|
Cu
|
Nb
|
Al
|
Ti
|
Co
|
Fe
|
4130
|
0.28-0.33
|
0.15-0.35
|
0.4-0.6
|
≤0.025
|
≤0.025
|
0.8-1.1
|
0.15-0.25
|
≤0.03
|
≤0.03
|
|
|
|
|
Bal
|
4140
|
0.38-0.45
|
0.15-0.35
|
0.75-1.0
|
≤0.025
|
≤0.025
|
0.8-1.1
|
0.15-0.25
|
|
|
|
|
|
|
Bal
|
410
|
0.08-0.15
|
≤1.0
|
≤1.0
|
≤0.025
|
≤0.025
|
11.5-13.5
|
|
≤0.75
|
|
|
|
|
|
Bal
|
410SS
|
≤0.08
|
≤1.0
|
≤1.0
|
≤0.025
|
≤0.025
|
11.5-13.5
|
|
≤0.6
|
|
|
|
|
|
Bal
|
F6NM
|
≤0.05
|
≤0.6
|
0.5-1.0
|
≤0.025
|
≤0.025
|
11.5-14.0
|
0.5-1.0
|
3.5-5.5
|
|
|
|
|
|
Bal
|
F51
|
≤0.03
|
≤1.0
|
≤2
|
≤0.025
|
≤0.025
|
21-23
|
2.5-3.5
|
4.5-6.5
|
|
|
|
|
|
Bal
|
17-4PH
|
≤0.07
|
≤1
|
≤1
|
≤0.025
|
≤0.025
|
15.0-17.5
|
|
3.0-5.0
|
3.0-5.0
|
0.15-0.45
|
|
|
|
Bal
|
Inconel625
|
≤0.1
|
≤0.5
|
≤0.5
|
≤0.015
|
≤0.015
|
20-23
|
8-10
|
Bal
|
|
3.15-4.15
|
≤0.4
|
≤0.4
|
≤1
|
≤5
|
Inconel718
|
≤0.08
|
≤0.35
|
≤0.35
|
≤0.015
|
≤0.015
|
17-21
|
2.8-3.3
|
50-55
|
≤0.3
|
4.75-5.5
|
0.2-0.8
|
0.65-1.15
|
≤1
|
Bal
|
Specifications
|
product levels
|
Manufacturing precision
|
|
inch
|
mm
|
PSL
|
|
1-13/16
|
46
|
PSL1
PSL2
PSL3
PSL3G
PSL4
|
Parallelism:≤0.02
Flatness:≤2 light bands
Roughness:≤0.1
|
2-1/16
|
52
|
||
2-9/16
|
65
|
||
3-1/16
|
78
|
||
3-1/8
|
80
|
||
4-1/16
|
103
|
||
4-1/8
|
105
|
||
5-1/16
|
128
|
||
5-1/8
|
130
|
||
6-1/16
|
150
|
||
7-1/16
|
180
|
Material property requirements
|
||||
Material designation
|
Yield strength
|
Tensile strength
|
Elongation
|
Reduction in area
|
(σ0.2min,psi)
|
(σb min,psi)
|
(δ4 gauge 2 inches,%min)
|
(ψ,%min)
|
|
36K
|
36000
|
70000
|
21
|
No requirement
|
45K
|
45000
|
70000
|
19
|
32
|
60K
|
60000
|
85000
|
18
|
35
|
75K
|
75000
|
95000
|
18
|
35
|
Material requirements
|
|||||
Material class
|
Corresponding corrosion
|
H2S partial pressure
(psi)
|
CO2 partial pressure
(psi)
|
General material
|
|
AA
|
General service
|
No corrosion
|
<0.05
|
<7
|
4130、4140
|
BB
|
General service
|
Slight corrosion
|
<0.05
|
7-30
|
410
|
CC
|
General service
|
Moderate to high corrosion
|
<0.05
|
>30
|
410
|
DD
|
Sour service
|
No corrosion
|
>0.05
|
<7
|
4130、4140
|
EE
|
Sour service
|
Slight corrosion
|
>0.05
|
7-30
|
410
|
FF
|
Sour service
|
Moderate to high corrosion
|
>0.05
|
>30
|
410
|
HH
|
Sour service
|
Serious corrosion
|
>0.05
|
>30
|
625、718
|