| Major categories of carbon steel |
National standard grades (GB) |
American Standard Number (ASTM) |
Japanese Code (JIS) |
European code (EN) |
Core Performance Features |
| Carbon structural steel |
Q195 |
A1011 Gr33 |
SS330 |
S185 |
Low carbon, good plasticity, easy to weld Join, low cost |
| Carbon structural steel |
Q235B |
A36/A283 GrC |
SS400 |
S235JR |
Yield 235MPa, weld Good, universal |
| Carbon structural steel |
Q355B |
A572 Gr50 |
SM490A |
S355JR |
High strength, weather resistance, weight loss |
| Premium carbon structural steel |
20 # |
1020/A106 GrB |
S20C |
C22.8 |
Low carbon, good toughness, carburizable |
| High-quality carbon structural steel |
45 # |
1045 |
S45C |
C45E |
Medium carbon, tunable, high strength |
| Premium carbon structural steel |
65Mn |
1065 |
S65C |
C67 |
Spring steel, high elasticity, wear-resistant |
| Carbon steel for pressure vessels |
Q345R |
A516 Gr60 |
SB410 |
P265GH |
Heat resistant, fatigue resistant, flaw detection Qualified |
| Carbon steel for pressure vessels |
Q245R |
A516 Gr55 |
SB450 |
P235GH |
Good low-temperature toughness and welding stability |
| Carbon steel coil |
SPHC |
A1011 Gr33 |
SPHC |
S185 |
Hot-rolled soft, easy to press and bend |
| Carbon steel coil |
DC01 |
A1011 CS |
SPCC |
DC01 |
Cold-rolled bright, high precision, easy Forming |
| Carbon steel coil |
10 # (8163). |
A106 GrA |
STPG370 |
C10 |
Low-carbon, solderable, low-pressure fluid |
| Special for carbon steel pipes |
Q235B(3091) |
A53 GrB |
SGP |
S235JR |
Well welded, low cost, structured with |