Structural, Carbon & HSLA Steel Plates
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ASTM A 36/ ASME SA36
This is the most popular ASTM structural steel specification for carbon steel shapes, plates and bars for welded and bolted construction of bridges, buildings and general purposes. It is not recommended where low temperature toughness is important. It has excellent welding properties and is suitable for drilling, punching, grinding and other machining and fabrication processes. it also bends easily.
- General-purpose mild steel offering a constant 36 ksi min yield
- Applications include construction of buildings, bridges, and other structures
| Mechanical Properties | Metric |
| Tensile Strength | 58 to 80 ksi |
| Tensile Strength, Yield | 36 ksi min |
| Elongation | 18% min in 8” 21% min in 2” (for plates wider than 24”) |
CSA G40.21 38W/260W
Steels of this type meet minimum strength requirements and are suitable for general welded construction where notch toughness at low temperatures is not a prime consideration.
- General-purpose structural quality steel.
- Applications include construction of buildings, bridges, and other structures
| Mechanical Properties | Metric |
| Tensile Strength | 60-85 ksi |
| Tensile Strength, Yield | 38 ksi min |
| Elongation | 18% in 8” |
CSA G40.21 44W/300W
Standard common weldable steel normally specified in building construction, it is not recommended where low temperature toughness is important. 44W can be flame cut, formed, drilled welded and machined by all normal means. When “T” is added to the grade, it will come with Charpy notch performance test results.
- Used in general fabrication
- Construction of ramps
- Construction of walkways
| Mechanical Properties | Metric |
| Tensile Strength | 60-85 ksi |
| Tensile Strength, Yield | 38 ksi min |
| Elongation | 20% in 8” min. |
CSA G40.21 50W/350W
Used normally for HSS sections, where specific strength requirements are required. Suitable for general welded construction where notch toughness at low temperatures is not a design requirement. This grade comes in category ranges from CAT1 to CAT5 for Charpy performance test.
- Used in general welded constructions
- Bridges
- Cranes
| Mechanical Properties | Metric |
| Tensile Strength | 65 to 95 ksi |
| Tensile Strength, Yield | 50 ksi min |
| Elongation | 19% min in 8″ 22% min in 2″ |
ASTM A 516 GRADE 70 / ASME SA 516 GRADE 70 AS ROLLED NACE MR0103/MR0175 BHN < 200
ASTM A516 covers steel plates of intermediate tensile strength for pressure vessels to be operated at atmospheric or lower temperature. The four grades offer excellent combinations of strength, weldability and toughness to permit designers flexibility in the design of pressure vessels coming under the jurisdiction of the ASME Pressure Vessel Code.
- Used in boilers
- Pressure vessels
| Mechanical Properties | Metric |
| Tensile Strength | 55 to 70 ksi |
ASTM A 516 GRADE 70 / ASME SA 516 GRADE 70 NORMALIZED CVNL @-50F 15/12 FT.LBS NACE MR0103/MR0175 BHN < 200 FINE GRAIN / FULLY KILLED.
Excellent combinations of strength, weldability and toughness to permit designers flexibility in the design of pressure vessels coming under the jurisdiction of the ASME Pressure Vessel Code. The plates are produced from fully killed fine grained steels and in the normalized condition will meet the requirements of ASTM A300: 15 ft.lbs. energy at50°F on Charpy Unotch specimens.
- Used in boilers
- Pressure vessels
ASTM A514 GRADE B,S QT-100 (ALGOMA 100 / HARDWEAR 400
CORROSION RESISTANCE
Some A514 steels have a corrosion resistance that is 4 to 6 times better than plain grade steels.- Used in welded bridges
- Lifting cranes
- Transport trailers
- Farming equipment
| Mechanical Properties | Metric |
| Tensile Strength (to 3/4″) | 115 to 135 ksi |
| Tensile Strength, Yield | 100 ksi min |
| Elongation | 18% min in 3/4″ 17% min in 4″ |
AR 400 (ALGOTUF 400 / BRINAR 400)
These steels are primarily intended to provide resistance to abrasive wear superior to that of ordinary structural quality steels. The “AR” material is intermediate carbon manganese steel with improved workability over carbon steel of the same hardness level.
- Not intended for structural use
- Truck bed liners
- Gates
| Mechanical Properties | Metric |
| Tensile Strength (to 3/4″) | 100 ksi |
| Tensile Strength, Yield | 60 ksi min |
| Elongation CHT-360 (Q & T) | 11 |