A105

CHEMICAL COMPOSITION

C: ≤0.35

Mn: 0.60-1.05

P: ≤0.35

S: ≤0.40

Si: 0.10-0.35

Cu: ≤0.40

Ni: ≤0.40

Cr: ≤0.30

Mo: ≤0.12

V: ≤0.08

MECHANICAL PROPERTIES

Tensile Strength min.: 485MPa; 70ksi

Yield Strength min.: 250MPa; 36ksi

Elongation min.: 22%

Reduction of Area, min.: 30%

Hardness: 137-187HBW

PHYSICAL PROPERTIES

Density (lb / cu. in.): 0.284

Specific Gravity: 7.9

Specific Heat (Btu/lb/Deg F - [32-212 Deg F]): 0.107

Melting Point (Deg F): 2740

Thermal Conductivity: 360

Mean Coeff Thermal Expansion: 6.7

Modulus of Elasticity Tension: 30

Modulus of Elasticity Torsion: 11

HEAT TREATMENT

Heat treatment is not required except for flanges or piping components as called out in ASTM A 105/A section 5.1. When heat treatment is required it consists of normalizing at 1550 to 1700 F and air cooled. Quenching direct from the forging heating shall be followed by a temper at 1100 F and air cool.

FORGING

This is a forging alloy that would be forged at temperatures in the range of 2200 to 1700 F followed by quenching and tempering or normalizing.