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Alloy Steel Sheet/Coil

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Alloy Material 20Cr Hot Rolled Steel Coil

Detailed Parameters

Classification According to structure 

1, the pressure vessel with steel plate: in case of the tail of the trademark R, the number of available yield point can also be used with carbon content or containing alloy elements. Such as: Q345, Q345R for the yield point. Another example: 20R, 16MnR, 15MnVR, 15MnVNR, 8MnMoNbR, MnNiMoNbR, 15CrMoR and with carbon content or content of alloy elements to represent.

2, welding gas cylinders with steel plate: in case of the tail of the trademark HP, its brand can be said with the yield point, such as: Q345HP, Q295HP; also can be used to indicate the alloying elements such as: 16MnREHP.

3, boiler steel plate: with a small G in the tail said. Its grades can be said that the yield point, such as: Q390g; also can be used to indicate the amount of carbon or alloy elements, such as 20g, 22Mng, 15CrMog, 16Mng, 19Mng, 13MnNiCrMoNbg, 12Cr1MoVg, etc..

4, the bridge with the steel plate: with a small Q at the end of the brand, such as 16Mnq, Q420q, 14MnNbq, etc..

5, automobile beam steel plate: with a capital l at the end of the brand, said such as 09MnREL, 06til, 08TiL, 10TiL, 09sivl and 16MnL, 16MnREL etc..


Chemical composition contrast

Grade

C

Si

Mn

P

S

Q345A

≤0.20

≤0.55

1.00-1.60

≤0.045

≤0.045

Q345B

≤0.20

≤0.55

1.00-1.60

≤0.040

≤0.040

Q345C

≤0.20

≤0.55

1.00-1.60

≤0.035

≤0.035

Q345D

≤0.18

≤0.55

1.00-1.60

≤0.030

≤0.030

Grade

V

Nb

Al

Ti

 

Q345A

0.02-0.15

0.015-0.060

 

0.02-0.20

 

Q345B

0.02-0.15

0.015-0.060

 

0.02-0.20

 

Q345C

0.02-0.15

0.015-0.060

≥0.015

0.02-0.20

 

Q345D

0.02-0.15

0.015-0.060

≥0.015

0.02-0.20



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