ASTM A573 Grade 70 is a structural carbon steel plate used in applications requiring improved toughness. It is mainly used for tanks, storage vessels, and other equipment that require high strength and improved toughness.
Properties of ASTM A573 Grade 70
Chemical Composition:
- Carbon (C): 0.24% max
- Manganese (Mn): 0.85-1.35%
- Phosphorus (P): 0.035% max
- Sulfur (S): 0.04% max
- Silicon (Si): 0.15-0.40%
Mechanical Properties
- Tensile Strength: 485-620 MPa (70-90 ksi)
- Yield Strength: 290 MPa (42 ksi) minimum
- Elongation (in 8" or 200 mm): 17% minimum
- Elongation (in 2" or 50 mm): 20% minimum
- Hardness: Typically around 150-180 HB depending on thickness and heat treatment.
Key Characteristics
- Weldability: ASTM A573 Grade 70 steel exhibits good weldability and can be welded using standard methods.
- Toughness: Enhanced toughness makes it suitable for low-temperature environments, such as storage tanks.
- Formability: Good ductility and formability for various applications like pressure vessels, tanks, and structural components.
Applications
- Pressure vessels and storage tanks
- Industrial structural applications
- Equipment used in the oil and gas, chemical, and manufacturing industries.
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FAQ
Q: What is A573 grade 70 equivalent to?
A: Main usage of ASTM A573 Gr70 steel plate is firstly and largely producing structural parts of the bolted and welded steel industrial area. ASTM A573 GR70 steel equivalent material : SS26,34,11. SS21,72,00.
Q: What is grade 70 stainless steel?
A: The "70" denotes the minimum tensile strength to be met by the material (actually the bolt, screw or nut after manufacture). Therefore, A4-70 is an austenitic, acid proof stainless grade (usually 316 material – 316 or 316L) which has been cold worked to provide a nimimum tensile strength of 700N/mm² (MPa).
| Other steel plate | ||||
| Name | Material | Specification (mm) | Tons | Remark |
| Low Alloy | Q345A, Q345B, Q345C, Q345D, Q345E, Q390, Q420, Q460C, ST52-3, S355J2+N, SS400, SA302GrC, S275NL, 35CrMo | 6 - 350 | 5788.56 | Normalizing, tempered ,controlled rolling, hot rolling , Hot rolling,1st inspection, 2nd inspection, 3rd inspection |
| Pressure Vessel Plate | Q245R, Q345R, Q370R, 16MnDR, 09MnNiDR, 15CrMoR, 14Cr1MoR, 12Cr2Mo1R, SA516Gr60, SA516Gr70, SA516Gr485, SA285, SA387Gr11, SA387Gr12, SA387Gr22, P265,P295,P355GH,Q245R(R-HIC),Q345R(R-HIC) | 3 - 300 | 8650 | Normalizing, tempered ,controlled rolling, hot rolling , Hot rolling,1st inspection, 2nd inspection, 3rd inspection |
| High-Strength Plate | WH785D/E,Q960D/E, Q890D/E,WH60D/E,WH70B,Q550D,Q590D,Q690D/E | 8 - 120 | 3086.352 | Quenched and tempered |
| Wear-Resistant Plate | NM360, NM400, NM450, NM500 | 6 - 150 | 3866.297 | Quenched and tempered |
| Bridge Plate | Q235qC, Q345qC, Q370qC, Q420qC, Q345qDNH, Q370qDNH, A709 - 50F - 2, A709 - 50T - 2 | 8 - 200 | 2853.621 | Hot rolling, normalized ,hot rolling controlled rolling, quenched and tempered + toughness and brittleness |
