Channel ASTM Standard ASTM Standard Channel Your Attractive Heading H-beam ASTM StandardH-beam EN StandardH-beam GB Standard I-beam EN StandardI-beam GB Standard Channel ASTM Standard Channel ASTM Standard ASTMGradeMinimum yield strength TypeUseabality ASTM A36/A36MA3636 ksi / 250 MPaCarbon Structural SteelGeneral structural steel ASTM A572/A572MGrade 5050 ksi / 345 MPaHigh-Strength Low-Alloy SteelFor building, bridge and heavy-duty structural applications ASTM A572/A572MGrade 4242 ksi / 290 MPaHSLAGeneral structure ASTM A572/A572MGrade 6060 ksi / 415 MPaHSLAHigh-strength structure ASTM A529/A529MGrade 5050 ksi / 345 MPaHigh-Strength Carbon-Manganese Steel of Structural QualityBuilding structure ASTM A588/A588MGrade 5050 ksi / 345 MPaAtmospheric Corrosion Resisting Steelfor outdoor, bridge and atmospheric corrosion-resisting structural applications ASTM A992/A992MGrade 5050 ksi / 345 MPaStructural Steel for Building StructureMain steel structure