Austenitic stainless steel bar 304H/1.4948/X6CrNi18-10/S30409 – GMTC

304H

SpecificationASTM A182

The 304H alloy is an improved version of 304 with a carbon content between 0.04-0.10. For parts that will be exposed to a temperature higher than 800°F, the use of 304H helps improve the strength at high temperatures.

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Specifications

Chemical composition (wt. %)

Element
C
Si
Mn
P
S
Ni
Cr
Mo
N
Min.
0.04
-
-
-
-
8.00
18.00
-
-
Max.
0.10
1.00
2.00
0.040
0.030
10.50
20.00
1.00
0.10

Physical Property

Density (g/cm^3)
7.9

Modulus of elasticity

Temperature (℃)
Gpa
20
200

Thermal Expansion Coefficient

Temperature (℃)
10^-6/℃
20~100
16.6

Mechanical Property

Items
Solution
Tensile Strength Rm (KSI)
75 min.
Hardness (HBW)
223 max.
Yield Strength 0.2%Rp (KSI)
30 min.
Percentage of Elongation A(%)
40 min.

Size Ranges

Products
Diameter (mm)
Length (mm)
Rolled bar
10~95
3,000~5,700
Forged bar
95.2~440
3,000~5,700
Billet
130x130, 140x140, 150x150, 160x160
7,000 max.
Flat bar
80x80 (min.)
Based on the customer needs

Heat Treatment Conditions

Heat Treatment Conditions
Solution Treatment: 1040℃, water cooling

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