ASTM A240 304 2B BA No.4 Finish Stainless Steel Plate

ASTM A240 304 2B BA No.4 Finish Stainless Steel Plate

ASTM A240 304 2B BA No.4 Finish Stainless Steel Plate Chemical Composition Table 1. Composition ranges for 304 grade stainless steel Mechanical Properties Table 2. Mechanical properties of 304 grade stainless steel 304H also has a requirement for a grain size of ASTM No 7 or coarser. Physical...
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ASTM A240 304 2B BA No.4 Finish Stainless Steel Plate

Chemical Composition

Table 1. Composition ranges for 304 grade stainless steel

Grade


C

Mn

Si

P

S

Cr

Mo

Ni

N

304

min.
max.

-
0.08

-
2.0

-
0.75

-
0.045

-
0.030

18.0
20.0

-

8.0
10.5

-
0.10

304L

min.
max.

-
0.030

-
2.0

-
0.75

-
0.045

-
0.030

18.0
20.0

-

8.0
12.0

-
0.10

304H

min.
max.

0.04
0.10

-
2.0

-
0.75

-0.045

-
0.030

18.0
20.0

-

8.0
10.5

-


Mechanical Properties

Table 2. Mechanical properties of 304 grade stainless steel

Grade

Tensile Strength (MPa) min

Yield Strength 0.2% Proof (MPa) min

Elongation (% in 50 mm) min

Hardness

Rockwell B (HR B) max

Brinell (HB) max

304

515

205

40

92

201

304L

485

170

40

92

201

304H

515

205

40

92

201

304H also has a requirement for a grain size of ASTM No 7 or coarser.


Physical Properties

Table 3. Physical properties of 304 grade stainless steel in the annealed condition

Grade

Density (kg/m3)

Elastic Modulus (GPa)

Mean Coefficient of Thermal Expansion (μm/m/°C)

Thermal Conductivity (W/m.K)

Specific Heat 0-100 °C (J/kg.K)

Electrical Resistivity (nΩ.m)

0-100 °C

0-315 °C

0-538 °C

at 100 °C

at 500 °C

304/L/H

8000

193

17.2

17.8

18.4

16.2

21.5

500

720


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