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Material of FLANGES according to ASTM Standards

Designation

Tensile Strength

Yield Point

Analysis %

Analysis %

Designation

ASTM

lb/sq. in min

N/mm²
mind.

lb/sq. in min

N/mm²
mind.

C

Si

Mn

P
max

S
max

Cr

Ni

Mo

ASTM

 

FOR HIGH TEMPERATURE SERVICE

 
 A 105-87 a

70000

483

36000 248 max
0.35
max
0.35
0.60
-1.05
0.040 0.050 - - -  A 105-77
 A 181-87 a

FOR GENERAL SERVICE

 A 181-77
 Class 60 60000 414 30000 207 max
0.35
max
0.35
max
1.10
0.050 0.050 - - -

Class 60

 Class 70 70000 483 36000 248 max
0.35
max
0.35
max
1.10
0.050 0.050 - - -

Class 70

 A 182-87 a Ferritic Steels for High - Temperature Service  A 182-78
 Grade F1 70000 483 40000 276 max
0.28
0.15
-
0.35
0.60
-
0.90
0.045 0.045 - - 0.44
-
0.65
 Grade F1
 Grade F2 70000 483 40000 276 max
0.21
0.10
-
0.60
0.30
-
0.80
0.040 0.040 0.50
-
0.81
- 0.44
-
0.65
 Grade F2
 Grade F5 70000 483 40000 276 max
0.15
max
0.50
0.30
-
0.60
0.030 0.030 4.00
- 6.00
max
0.50
0.44
-
0.65
 Grade F5
 Grade F5a 90000 621 65000 448 max
0.25
max
0.50
max
0.60
0.040 0.030 4.00
- 6.00
max
0.50
0.44
-
0.65
 Grade F5a
 Grade F9 85000 586 55000 379 max
0.15
0.50
-
1.00
0.30
-
0.60
0.030 0.030 8.00
-
10.00
- 0.90
-
1.10
 Grade F9
 Grade F11 70000 483 40000 276 0.10
-
0.20
0.50
-
1.00
0.30
-
0.80
0.040 0.040 1.00
- 1.50
- 0.44
-
0.65
 Grade F11
 Grade F12 70000 483 40000 276 0.10
-
0.20
0.10
-
0.60
0.30
-
0.80
0.040 0.040 0.80
- 1.25
- 0.44
-
0.65
 Grade F12
 Grade F22 75000 517 45000 310 max
0.15
max
0.50
0.30
-
0.80
0.040 0.040 2.00
- 2.50
- 0.87
-
1.13
 Grade F22

A 182.87 a

Austenitic Steels for High - Temperature Service  A 182.78

Grade
F304

75000 517 30000 207 max
0.08
max
1.00
max
2.00
0.040 0.030 18.0
- 20.0
8.0
- 11.0
-

Grade
F304

Grade
F304H

75000 517 30000 207 0.04
- 0.10
max
1.00
max
2.00
0.040 0.030 18.0
- 20.0
8.0
- 11.0
-

Grade
F304H

Grade
F304 L

70000 483 25000 172 max
0.035
max
1.00
max
2.00
0.040 0.030 18.0
- 20.0
8.0
- 13.0
-

Grade
F304 L

Grade
F310

75000 517 30000 207 max
0.15
max
1.00
max
2.00
0.040 0.030 24.0
- 26.0
19.0
- 22.0
-

Grade
F310

Grade
F316

75000 517 30000 207 max
0.08
max
1.00
max
2.00
0.040 0.030 16.0
- 18.0
10.0
- 14.0
2.00
- 3.00

Grade
F316

Grade
F316 H

75000 517 30000 207 0.04
- 0.10
max
1.00
max
2.00
0.040 0.030 16.0
- 18.0
10.0
- 14.0
2.00
- 3.00

Grade
F316 H

Grade
F316 L
70000 483 25000 172 max
0.035
max
1.00
max
2.00
0.040 0.030 16.0
- 18.0
10.0
- 15.0
2.00
- 3.00
Grade
F316 L
Grade
F321
75000 517 30000 207 max
0.08
max
1.00
max
2.00
0.030 0.030 min
17.0
9.0
- 12.0
- 1) Grade
F321
Grade
F321 H
75000 517 30000 207 0.04
- 0.10
max
1.00
max
2.00
0.030 0.030 min
17.0
9.0
- 12.0
- 2) Grade
F321 H
Grade
F347
75000 517 30000 207 max
0.08
max
1.00
max
2.00
0.030 0.030 17.0
- 20.0
9.0
- 13.0
- 3) Grade
F347
Grade
F347 H
75000 517 30000 207 0.04
- 0.10
max
1.00
max
2.00
0.030 0.030 17.0
- 20.0
9.0
- 13.0
- 4) Grade
F347 H

A 182.87 a

FOR LOW TEMPERATURE SERVICE  A 182.78
Grade LF1 60000 414 30000 207 max
0.30
0.15
-
0.30
0.75
-
1.05
0.035 0.040 - - - Grade LF1
Grade LF2 70000 483 36000 248 max
0.30
0.15
-
0.30
max
1.35
0.035 0.040 - - - Grade LF2
Grade LF3 70000 483 37500 259 max
0.20
0.20
-
0.35
max
0.90
0.035 0.040 - 3.25
- 3.75
- Grade LF3
 

        1) 5 x C% ≤ Ti% 0.60%                                  3) 10 x C% ≤ Ta + Nb% ≤ 1.00%
        2) 4 x C% ≤ Ti% 0.60%                                  4) 8 x C% ≤ Ta + Nb% ≤ 1.00%