B340LA high-strength low alloy steel is low carbon steel added with a little alloy elements such as niobium and/or titanium, which will be allowed to form carbide and nitride with carbon and nitrogen and separate these carbide and nitride out of ferritic matrix to increase steel strength. With excellent formability and relatively high strength, it is mainly used for manufacturing structural parts of automobiles such as chairs and cross beams.
B340LA high-strength low alloy steel product sizes:
Nominal thickness: 0.45mm~2.0mm, nominal width: 800mm~1850mm
B340LA high-strength low alloy steel mechanical performances:
Steel grade |
Yield strengtha |
Tensile strength Mpa |
After Breakage Percent Elongation (L0=50mm, b=25mm)%≥ |
180°bending test(b≥20mm) |
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Nominal thickness mm |
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0.60~<1.0 |
1.0~<1.6 |
1.6 |
Bending center diameter |
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B340LA |
340~460 |
440 |
22 |
24 |
26 |
0.5a |
taking RP0.2 in case of indistinct yield, otherwise ReL
using P14 sample of GB/T228
B340LA high-strength low alloy 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 any remarkable defect visible and the other side must reach FB requirements at leasts. |
- Nickle alloys & Super alloys
- Stainless steel & Heat resistant steel
- Carbon steel
- Low alloy high strength steel
- High strength steel
- Boiler steel plate
- Shipbuilding steel plate
- Bridge structural steel
- Weathering steel
- Wear resistant steel
- Pipeline steel
- High carbon steel
- Alloy steel
- CQ/DQ/DDQ/CSS/HSS Grade steel
- Hot rolled steel coil
- Cold rolled steel coil
- Pickled & oiled steel coil
- Electrical steel
- Galvanized and prepainted steel
- Shipbuilding angle steel bar
- Shipbuilding bulb flat bar
- Shipbuilding L shape bars