ASTM A574 Bolts
Buy Grade AISI 8740 Bolts, ASTM A574 Screw at low cost
The American Society for Testing and Materials A574 is a specification that lists down requirements for alloy steel socket-head cap screws. Per this specification, the A574 Socket Cap Screws are available in the quenched and tempered condition. Both quenching and tempering are heat treatments that are used to strengthen and harden alloy various steel grades.The quenching process performed on the A574 Bolts is a tightly controlled one and it involves heating the material following which the bolts are then rapidly cooled.
The A574 Hex Bolts is rapidly cooled in order to set the components in place as fast as possible. Tempering these fasteners is used to achieve both greater toughness as well as increased ductility by reducing the hardness of the material. Because the Grade AISI 8740 Bolts are tough, they naturally inherit other important yet simultaneous properties such as increased resistance to wear and good resistance to abrasion. Thus giving the alloy steel grade A574M Bolts an edge over conventional carbon steel fasteners. Hence the A574 Screw is used in demanding applications where they are a part of either machinery or structures in those areas where greater resistance to abrasion as well as higher yield strength are prime requirements for e.g. mining, earthmoving, quarrying, and construction.
ASTM A574 Material Sizes And Schedule Specifications
| Grade | 2, B7, 9.8, 5.8, 5, 8.8, 12.9, 8, L9, 10.9, 4.6 |
|---|---|
| Inch | 0 -3" |
| Material | Bronze / Coppe, Brass, Copper, Steel, Molybdenum, Hardened Steel, Superalloy Inconel, Hastelloy, 718 Bolts, Monel, Stainless Steel, Exotic Metals, Titanium, Other |
| Metric | M1.6 - M48 |
| Application Industries & uses | Automotive, Agriculture, Energy, Construction and Infrastructure, Transportation |
| Length | Customized Length |
| Standards | BS, ASME / ANSI, SAE, DIN, JIS, ISO, Other |
| Threads Configuration | B1.13M 6h-6G, ASME B1.1 2A/3A – 2B/3B |
| Certification | American Society for Testing and Materials & ASME |
| Method | Cold forming, Hot Forging, Wire Forming |
| Testing Methods | E38, E54, E53, E62, E34 |
| Thread Diameters | M7 to M37 |
A variety of ASTM A574M Bolts, ASTM A574 Hex Bolts, ASTM A574 Socket Cap Screws Contact for free sample
A574M Socket Head Cap Bolts Grades
| AISI 4037 | AISI 4042 | AISI 4137 | AISI 4140 | AISI 4142 |
| AISI 4145 | AISI 4340 | AISI 8740 |
ASTM A574 Anchor Bolt Chemical Material Composition
| Element | Product Analysis % | Heat Analysis % |
|---|---|---|
| Carbon | 0.31 | 0.33 |
| Phosphorus | 0.040 | 0.035 |
| Sulfur | 0.045 | 0.040 |
Mechanical Characteristics of ASTM A574 Screw
| MECHANICAL PROPERTIES: MACHINED TEST SPECIMEN | |||||||
|---|---|---|---|---|---|---|---|
| Property | Less than, or equal to, 0.500" dia. | Greater than 0.500" dia. | |||||
| Yield strength at 0.2% offset, ksi min | 153 | 153 | |||||
| Tensile Strength, ksi min | 180 | 170 | |||||
| Elongation in 5D, min | 10% | 10% | |||||
| Reduction of Area, min | 35% | 35% | |||||
| MECHANICAL PROPERTIES: FULL SIZE SCREWS | |||||||
|---|---|---|---|---|---|---|---|
| Property | Less than, or equal to, 0.500" dia. | Greater than 0.500" dia. | |||||
| Tensile or Wedge tensile strength, ksi min | 180 | 170 | |||||
| Proof Load (stress), ksi | 140 | 135 | |||||
| Rockwell (HRC) | 39 - 45 | 37 - 45 | |||||