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What is ASTM A325 Type 1?

What is ASTM A325 Type 1?

ASTM A325 Type 1 is a standard material specification for high strength carbon steel fasteners, for use in high tensile structural bolting and other general purpose applications.

What does grade A325 mean?

ASTM A325 is an ASTM International standard for heavy hex structural bolts, titled Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength. To minimize confusion, bolt head markings are unchanged and the designation A325 is retained as a grade name within the new standard.

What are type1 bolts?

According to the RCSC, Type 1 covers medium carbon steel for F3125 Grade A325 bolts and alloy steel for F3125 Grade A490 bolts. Type 1 Grade A325 bolts can be mechanically coated or hot-dip galvanized to protect them from corrosion.

What is the yield strength of A325 bolt?

A325 Mechanical Properties

Size Tensile, ksi Yield, ksi
1⁄2 – 1 120 min 92 min
11⁄8 – 11⁄2 105 min 81 min

Is A325 a high strength bolt?

A325 Structural Bolts ASTM A325 covers high strength structural bolts used in structural steel connections. A325s have a heavy hex head, a full body diameter, and are normally short in overall length since they are connecting steel to steel.

Are A325 bolts hardened?

Being that A325 type 3 bolts are made from weathering steel, the grade of nut used would be ASTM A563 Grade DH3 or C3. As far as the washers are concerned, the recommended grade is the ASTM F436 hardened washer, type 1 or 3 depending on the type of bolt grade.

Are Grade 8 bolts stronger than A325?

A325 bolts are typically manufactured from a medium carbon steel (although they can be made from an alloy) while SAE grade 8 bolts are made from a medium carbon alloy steel. Grade 8 bolts are significantly stronger than an A325. An ASTM specification with similar strength properties to grade 8 is ASTM A490.

Is Grade 5 equal to A325?

When looking at the mechanical requirements of bolts it appears that a grade A325 and SAE J429 Grade 5 are identical as do the grade A490 and the SAE J429 Grade 8. Notice the Grade 5 has a much smaller head configuration and a shorter shank than the A325 structural bolt.

Is Grade 5 stronger than A325?

Answer: No. The strength properties of SAE J429 grade 5 bolts and ASTM A325 bolts are identical; likewise, SAE J429 grade 8 bolts are the strength equivalent of ASTM A490 bolts. These material specifications differ, however, in that ASTM A325 and A490 specify thread length and head size, whereas SAE J429 does not.

What grade is A325 bolts?

Type 3 grade A325 bolts shall be marked “A325” to distinguish them from standard grade A325s. Grade A490 bolts are available in diameters from 1/2 to 1-1/2 inch diameters with a minimum tensile strength of 150,000 PSI for all diameters, and are offered in two types.

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