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The difference between SA240 304H and SA240 304 stainless steel plate

SA240 304H stainless steel plate and SA304 304 stainless steel plate are both from U.S. steel specification SA240/SA240 Chromium-Nickel Austenitic stainless steel materials.What is difference SA240 304H stainless steel plate and SA240 304 stainless steel plate ? SA240 304H stainless steel plate have a higher Carbon content in chemical composition and can be used at higher temperature.At the same time,SA304H stainless steel plate owned a lower anti-corrosion than SA240 304 stainless steel plate and SA240 304L stainless steel plate because of higher carbon content also.


SA240 304 stainless steel plate is completely equal to A240 304 stainless steel plate and JIS G4304 SUS304.Xinsteel stock various thickness hot rolled and cold rolled SA240 304 304H 304L stainless steel plate and sheet in warehouse ready for shipment.
 

SA240 304 vs SA240 304H

Chemical composition: Heat Analysis  Max%

Standard

Grade

C

Mn

P

S

Si

Cr

Ni

N

ASME SA240/240M

304

0.07

2.00

0.045

0.030

0.75

17.5-19.5

8.0-10.5

0.10

ASME SA240/240M

304H

0.04-0.10

2.00

0.045

0.030

0.75

18.0-20.0

8.0-10.5

0.10

Mechanical Properties:

UNS Designation

Yield strength

Tensile strength

Hardness max.

Mpa  Min.

Mpa

Brinell HBW

ASME SA240/240M

304

UNS S30400

205

515

201

ASME SA240/240M

304H

UNS S30409

205

515

201