ASME SA283, ASTM A283 H-beams, Q345H Steel
ASTM A283 H-beam
Chemical composition of Q345H steel:
Q235 is divided into four levels A, B, C and D (GB/T 700-2006)
Q235A Grade C ≤ 0.22% Mn ≤ 1.4% Si ≤ 0.35% s ≤ 0.050 P ≤ 0.045.
Grade Q235B contains C ≤ 0.20% Mn ≤ 1.4% Si ≤ 0.35% s ≤ 0.045 P ≤ 0.045.
Grade Q235C contains C ≤ 0.17% Mn ≤ 1.4% Si ≤ 0.35% s ≤ 0.040 P ≤ 0.040.
Q235D Grade C ≤ 0.17% Mn ≤ 1.4% Si ≤ 0.35% s ≤ 0.035 P ≤ 0.035.
Mechanical properties of Q235H steel.
Modulus of elasticity (E/GPA): 200-210.
Poisson's ratio( ν): 0.25-0.33.
Tensile strength( σ b/MPa): 375-500.
Elongation( δ 5/%):
≥26(a≤16mm).
≥25(a>16-40mm).
≥24(a>40-60mm).
≥23(a>60-100mm).
≥22(a>100-150mm).
≥21(a>150mm).
Chemical composition of Q345H steel:
Q235 is divided into four levels A, B, C and D (GB/T 700-2006)
Q235A Grade C ≤ 0.22% Mn ≤ 1.4% Si ≤ 0.35% s ≤ 0.050 P ≤ 0.045.
Grade Q235B contains C ≤ 0.20% Mn ≤ 1.4% Si ≤ 0.35% s ≤ 0.045 P ≤ 0.045.
Grade Q235C contains C ≤ 0.17% Mn ≤ 1.4% Si ≤ 0.35% s ≤ 0.040 P ≤ 0.040.
Q235D Grade C ≤ 0.17% Mn ≤ 1.4% Si ≤ 0.35% s ≤ 0.035 P ≤ 0.035.
Mechanical properties of Q235H steel.
Modulus of elasticity (E/GPA): 200-210.
Poisson's ratio( ν): 0.25-0.33.
Tensile strength( σ b/MPa): 375-500.
Elongation( δ 5/%):
≥26(a≤16mm).
≥25(a>16-40mm).
≥24(a>40-60mm).
≥23(a>60-100mm).
≥22(a>100-150mm).
≥21(a>150mm).
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