1. A48CPR brand: material brand is A48CPR in NFA 36-205-82.

 

2. The thickness deviation of A48CPR steel plate shall meet the requirements of grade C in en10029-1991.

 

3. The straightness of steel plate shall meet the requirements of class n of common straightness in en10029-1991.

 

4. A48CPR delivery status

 

Steel plates shall be delivered in normalized or quenched + tempered, normalized + tempered condition.

 

5. A48CPR smelting method

 

Adopt electric furnace + external refining + vacuum degassing to smelt, fine grain killed steel.

 

 

 

6. A48CPR chemical composition:

 

 

 

Brand, analysis type, chemical composition of steel wt%

 

C Si Mn P

 

Less than S

 

Less than AI total

 

More than Cr

 

Less than Mo

 

Less than Ni

 

Less than

 

A48CPR

 

Smelting analysis ≤

 

0.20 or less

 

0.50 1

 

1.60 0.025 0.015 -- 0.25 0.10 0.30

 

Finished product analysis ≤

 

0.22 or less

 

0.55 1

 

1.60 0.030 0.020 -- 0.25 0.10 0.30

 

Note: (1) when the thickness is greater than 25mm, Nb ≤ 0.040%, V ≤ 0.050%.

 

Smelting analysis: < 40mm ＜ Mo ≤ 0.20%, > 40mm Mo ≤ 0.30%, finished product analysis: < 40mm Mo ≤ 0.21%, > 40mm Mo ≤ 0.33%

 

 

 

7. Mechanical and technological properties of A48CPR:

 

 

 

Brand thickness

 

Mm room temperature tensile property bending test impact test

 

Yield strength

 

Reh tensile strength

 

Rm elongation

 

A thickness tensile Z

 

%,≥ b=35mm 0℃ -20℃

 

MPa ≥ MPa% ≥ average value ≥ minimum value ＜ 180 ℃ Akv, J, ≥

 

A48CPR

 

＞6～30 285 470-560 23 - - d=2a 31 -

 

＞30～50 265 22

 

＞50～80 265 21

 

＞80～110 255