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Related products : BLD steel , BSUFD steel , BUSD steel , BLC steel , BDCK battery shell steel
With extra deep drawing, BUFD drawing steel is guaranteed that no tensile strain mark occurs on steel plates and strips at their application in case of room temperature storage.
BUFD drawing steel drawing steel chemical composition:
Steel grade |
Chemical composition |
|||||
|
C |
Mn |
P |
S |
Alta |
Ti b |
|
|
BUFD |
≤0.008 |
≤0.30 |
≤0.020 |
≤0.015 |
≥0.015 |
≤0.20 |
a: with Nb instead of Ti, but Nb and Ti total content ≤0.20
BUFD drawing steel drawing steel mechanical performances:
Steel grade |
Yield |
Tensile |
After Breakage Percent Elongation |
r c, d |
n c, d |
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|
Nominal thickness mm |
||||||||
|
<0.60 |
0.60~<1.0 |
1.0~<1.6 |
≥1.6 |
|||||
|
BUFD |
120~190 |
250 |
42 |
44 |
46 |
48 |
1.8 |
0.21 |
a. taking R P0.2 in case of indistinct yield, otherwise R eL .
b. using P14 sample of GB/T228
c. r and n for BUFD, allowable reduction by 0.2 in case of thickness≥1.6mm, no guarantee for r and n in case of thickness ≥2.0mm.
d. r=(r 90 +2r 45 +r 0 )/4; n=(n 90 +2n 45 +n 0 )/4.
BUFD drawing steel drawing steel surface quality:
Grade |
Code No. |
Features |
|
Relatively high-grade finishing surface |
FB(O3) |
It is allowed for the existence of a few surface defects which will not affect forming and coating & plating adhesiveness such as minor scratch, impression, pit, roll mark and oxidation tint. |
|
High-grade finishing surface |
FC(O4) |
One side of relatively good quality is free from any remarkable defect visible and the other side must reach FB requirements at least. |
|
Ultra high-grade finishing surface |
FD(O5) |
One side of relatively good quality is free from any defect, namely appearance quality after painting or electrogalvanizing is no affected, and the other side must reach FB requirements at least. |
BUFD drawing steel reference list of equivalent steel grades:
Standard No. |
Q/BQB 408-2003 |
JFS A 2001-1998 |
GB 5213-2001 |
|
|
BUFD |
JSC270F |
SC2 |