

A283 Grade A  Steel Introduction:
Comparing  with other three steel grades in ASTM A283, Grade A has the lowest Carbon  contains limited, and A283 Grade D has the highest carbon contains for  improving its yield strength and tensile strength values. The most common used  steel grade is A283 Grade C.
A283 Grade A Chemical Composition:
| A283 Grade A Chemical Composition | ||||||
| Grade | The Element Max (%) | |||||
| C | Si | Mn | P | S | Cu (min) | |
| A283 Grade A | 0.14 | 0.15-0.40 | 0.90 | 0.035 | 0.04 | 0.20 | 
A283 Grade A Mechanical Property:
| Grade | A283 Grade A Mechanical Property | |||
| Thickness | Yield | Tensile | Elongation | |
| A283 Grade A | mm | Min Mpa | Mpa | Min % | 
| t≦50 | 310-415 | 165 | 30 | |
| 50<t≦200 | 310-415 | 165 | 27 | |
A283 Grade A  Steel Application:
A  large number of used in construction and engineering structure. Used to make  steel or building workshop room, high voltage power transmission tower,  Bridges, vehicles, boilers, containers, ships, etc., also a lot less used as metal  for mechanical parts.