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Related products : BUFD steel , BLD steel , BSUFD steel , BUSD steel , BDCK battery shell steel
With commercial purpose, BLC drawing steel has no guarantee period on tensile strain mark.
BLC drawing steel chemical composition:
Steel grade |
Chemical composition |
|||||
|
C |
Mn |
P |
S |
Alta |
Ti b |
|
|
BLC |
≤0.10 |
≤0.50 |
≤0.035 |
≤0.025 |
≥0.020 |
- |
a: For BLC, when C≤0.01, Alt≥0.015。
b: with Nb instead of Ti, but Nb and Ti total content ≤0.20
BLC drawing steel mechanical performances:
Steel grade |
Yield |
Tensile |
After Breakage Percent Elongation |
r c, d |
n c, d |
|||
|
Nominal thickness mm |
||||||||
|
<0.60 |
0.60~<1.0 |
1.0~<1.6 |
≥1.6 |
|||||
|
BLC |
140~270 |
270 |
36 |
38 |
40 |
42 |
- |
- |
a. taking R P0.2 in case of indistinct yield, otherwise R eL .
b. using P14 sample of GB/T228
c. r=(r 90 +2r 45 +r 0 )/4; n=(n 90 +2n 45 +n 0 )/4.
BLC 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. |
BLC drawing steel reference list of equivalent steel grades:
Standard No. |
Q/BQB 408-2003 |
JFS A 2001-1998 |
GB 5213-2001 |
|
Steel grade |
BLC |
JSC270C |
- |