Chemical Composition

Comparative Properties Of Materials
CHEMICAL COMPOSITION(%)
PHYSICAL PROPERTIES
GRADE
TP
C
Mn
Si
S
P
Cr.
Ni
Mo
Ti
Tensile
Strength
ksi(MPa
)
Yield
Strength
ksi(MPa)

Elongation
in 2 inches
%-min

Max. Hardness

Thermal
Conductivity
Cal/Sec. Cm.°c
at Temp. Range20-500
°c
Co-efficient
of expansion
x 10° -Cm/Cm, °c
at Temp. Range
20-870°c

Brinnel Rockwell
"B"

AISI

304

0.07 Max
2.0 Max
1.0 Max
0.03 Max
0.045 Max
17.5- 19.5
8-10.5
-
-
75(515)
30(205)
35
200
90
0.051
19.8
AISI 304-L
0.03 Max
2.0 Max
1.0 Max
0.03 Max
0.045 Max
17.5-19.5
8-10.0
-
-
70(485)
25(170)
35
200
90
0.051
19.8
AISI 316
0.07 Max
2.0 Max
1.0 Max
0.03 Max
0.045 Max
16.5-18.5
10-13.0
2-3.0
-
75(515)
30(205)
35
200
90
0.042
19.3
AISI 316-L
0.03 Max
2.0 Max
1.0 Max
0.03 Max
0.045 Max
16.5-18.5
10-13.0
2-3.0
-
70(485)
25(170)
35
200
90
0.042
19.3
AISI 316-Ti
0.08 Max
2.0 Max
1.0 Max
0.03 Max
0.04 Max
16.5-18.5
11-14.0
2.25-3.0
>5c
78(540)
30(205)
35
200
90
0.042
19.3
AISI 321
0.08 Max
2.0 Max
1.0 Max
0.03 Max
0.045 Max
17-19.0
9-12.0
-
>5c
75(515)
30(205)
35
200
90
0.051
19.8

 

Requirements Of Testing
.Permissible Variations In Dimensions
 
ASTM Standard
Flange/ Flaring
Flattering
Reverse
Flattering
Reverse
Bending  
Tensile
Hydrostatic
Hardness
  
 Outside Dia. (mm)
  Wall Thickness (%)
Over
Under
Over
Under
A-213
0
0
-
-
0
0
0
<38 mm O.D
0.1 - 0.15
0.1 - 0.15
20
0
A-249
0
0
-
0
0
0
0
>38mm up to 76 mm
0.2 - 0.38
0.2 - 0.38
10
10
A-269
0
-
0
-
-
0
0
 
0.13 - 0.38
0.13 - 0.38
10
10
A-270
-
-
0
-
-
0
-
 
0.05 - 0.08
0.20 - 0.30
12.5
12.5
A-312
-
-
-
-
0
0
-
<38 mm N.B.
0.40
0.79
N.S*
12.5
                >38 mm N.B.
0.79
0.79
N.S*
12.5
0 = Test Required  ‡ = Max:2500lbs/in ²  * =  Not Specified Eddy-current non destructive test and intergramular corrosion-resistance test can be offered on request.