ASTM A 242 TYPE 1 steel plate/sheet, ASTM A 242 TYPE 1 steel plate/sheet, under ASTM standard, we can regard A 242 TYPE 1 steel plate/sheet for steel resistant to Atmospherical corrosion steels.
A 242 TYPE 1 steel grade is a hot rolled products of structural steels in technical delivery conditions with improved atmospheric corrosion resistance. The steel grade in A 242 TYPE 1 a maximum carbon equivalent value of 0.44% and for grade A 242 TYPE 1 a maximum carbon equivalent value of 0.52% based on the ladle analysis shall for all thickness. The followings are the chemical composition and mechanical properties of ASTM A 242 TYPE 1 steel plate.
A 242 TYPE 1 steel chemical composition
| Grade |
C |
Mn | Cr | Si | N | S | Cu | P |
| A 242 TYPE 1 | 0.15 | 1.1 | 0.25-1.35 | 0.8 | 0.01 | 0.04-0.035 | 0.20-0.60 | 0.05-0.16 |
A 242 TYPE 1 steel mechanical properties
| Grade | Yield Strength Min. [MPa] Norminal Thickness (mm) |
Tensile Strength [MPa] Norminal Thickness(mm) |
Impact Degraa [J] |
||||||||
| A 242 TYPE 1 | ≤16 | >16 ≤40 |
>40 ≤63 |
>63 ≤80 |
>80 ≤100 |
>100 ≤150 |
≤3 | >3 ≤100 |
>100 ≤150 |
-20 | 27 |
| 355 | 345 | - | - | - | - | 510-680 | 470-630 | - | |||
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