STRUCTURAL BOLTS A325 TYPE 1

ASTM A325 BOLTS,Type 1

Description

A heavy hex bolt made of medium carbon steel. The bearing surface shall be flat and washer faced, and the point is chamfered.

Applications/Advantages

Commonly used in structural steel joints in heavy construction

Heat Treatment

Type 1 bolts shall be heat treated by quenching in a liquid medium from above the austenitizing temperature and then tempering by reheating to a temperature of at least 800°F.

Material

Type 1 bolts shall be made from a carbon steel which conforms to the following chemical composition requirements--

Carbon: 0.25-0.58%; Manganese: 0.57% minimum; Phosphorus: 0.048% maximum; Sulfur: 0.058% maximum

Hardness

1/2" through 1" diameter, inclusive: Rockwell C24 - 35

1-1/8" through 1-1/2" diameter, inclusive: Rockwell C19 – 31

Proof Load

1/2" through 1" diameter, inclusive: 85,000 psi.

1-1/8" through 1-1/2" diameter, inclusive: 74,000 psi.

Yield Strength

1/2" through 1" diameter, inclusive: 92,000 psi. minimum

1-1/8" through 1-1/2" diameter, inclusive: 81,000 psi. minimum

Tensile Strength

1/2" through 1" diameter, inclusive: 120,000 psi. minimum

1-1/8" through 1-1/2" diameter, inclusive: 105,000 psi. minimum

Plating

Zinc,HDG,Plain,Dacrotized,Teflon,Colorful Dye