A325/SCM440 – 7TMW Anchor Bolt
What is A325/SCM440 By 7 Tiger Metal Works?
The A325/SCM440 specification is our exclusive product, developed through years of expertise at 7Tiger Metal Works. This specification ensures that our anchor bolts meet the stringent requirements of ASTM F3125 Grade A325 & ASTM F1554 Grade 105. With precision fabrication and a commitment to quality, our A325/SCM440 bolts provide reliable performance for demanding structural applications.
ASTM F3125 Grade A325 Standard / SCM440 Material
ASTM A325, under ASTM F3125 (Finished Product for Heavy Hex Structural Bolt), is a standard specification for high-strength structural bolts used in steel-to-steel connections within structural frameworks, such as building frameworks, bridges, towers, and other steel structures where a strong, stable connection is essential.
ASTM F1554 (Finished Product for Anchor Bolts) is a standard specification for high-strength structural bolts used in concrete-to-steel connections to anchor structural elements, including building columns, steel frames, heavy equipment, light poles, and bridge bearings, to concrete foundations.
It is important to note that ASTM F3125 Grade A325 and ASTM F1554 Grade 105 specify the requirements for the finished structural bolt, not the raw material from which it is manufactured. (Click here to learn more about A325 vs F1554 )
At 7Tiger Metals Works, we ensure compliance with ASTM A325 & ASTM F1554 (Finished Product) by using SCM440 (Raw Material Shafting). SCM440 is selected because its tensile and yield strength exceed the mechanical properties required by the A325 & F1554 105 standard. Our compliance is achieved through precision cut threading and bending, without additional heat treatment, ensuring both strength and reliability in demanding structural applications.
A325/SCM440 - 7TMW Anchor Bolt Properties
| Mechanical Properties (ASTM F3125 Grade A325 to SCM440 Mill Cert) | ||||||
| Tensile Strength | Yield Strength | Hardness | Elongation | |||
| Min | Max | Min | Max | % | ||
| ASTM F3125 Grade A325 |
1/2” to 1” : 825Mpa (120ksi) 1” to 1-1/2”: 725Mpa (105ksi) |
1/2” to 1” : 620Mpa (90ksi) 1” to 1-1/2”: 560Mpa (81ksi) |
34 HRC | 14% | ||
| ASTM F1554 Grade 105 | 862 mpa(120ksi) | 1034 mpa(150ksi) | 724 mpa(105ksi) | 12%-15% | ||
| SCM440 Raw Mat (No Thread) Mill Cert | 1151 mpa | 1177 mpa | 984 mpa | 1011 mpa | 28 to 43 HRC | 12%-16% |
| Mechanical Properties of A325/SCM440 - 7TMW Anchor Bolt | ||||||
| Testing Method : ASTM E8-21 @ MIRDC LAB RESULT | ||||||
| Tensile Strength | Yield Strength | Hardness | Elongation | |||
| Min | Max | Min | Max | % | ||
| Sample Specimen: 16mm x 700mm with 150mm Thread on Top and Bottom | ||||||
| A325/SCM440 Anchor Bolt | 1030 mpa | 830 mpa | 33HRC | 17% | ||
| Note: Reduced Section Specimen as per ASTM F606 redirected to ASTM E8 | ||||||
| Sample Specimen: 16mm x 700mm (No Thread) | ||||||
| SCM440 Raw Mat | 995 mpa | 685 mpa | 33HRC | 16% | ||
| Mechanical Properties of A325/SCM440 - 7TMW Anchor Bolt | |||
| Testing Method : ASTM F606 Axial Tension for Externally Threaded Fasteners @ MIRDC LAB RESULT | |||
| Diameter | Tensile Load (lbf) | Tensile Load (Newton) | |
| ASTM F3125 Grade A325 (Specs) | 5/8" | 27,100 lbf (Min) | 120,102 N (Min) |
| ASTM F1554 Grade 105 (Specs) | 5/8" | 28,200 lbf (Min) | 125,440 N (Min) |
| A325/SCM440 Anchor Bolt - Sample Specimen: 16mm x 700mm with 150mm Thread on Top and Bottom | 5/8" | 31,644 lbf (Test Result) | 140,760 N (Test Result) |
| Chemical Properties | |||||||||
| Chemical Composition | C | Si | Mn | P | S | Cr | Ni | Cu | Mo |
| ASTM F3125 Grade A325 Type 1 | 0.30-0.52 | 0.15-0.30 | 0.60 min | 0.035 max | 0.040 max | - | - | - | - |
| ASTM F1554 Grade 105 | - | - | - | 0.048 max | 0.058 max | - | - | 0.20 min | - |
| Our raw material, SCM440, qualifies as Type 1 under ASTM F3125 due to its high-tensile alloy steel composition. | |||||||||
| SCM440 Mill Cert | 0.38-0.43 | 0.15-0.35 | 0.5-1 | 0.010 -0.22 | 0.03-0.07 | 0.8 - 1.1 | 0.00-0.25 | 0-0.40 | 0.15-0.25 |
| A325/SCM440 Test Result (ASTM E415-21 @ MIRDC ) | 0.41 | 0.22 | 0.62 | 0.011 | 0.0032 | 1.00 | 0.012 | 0.011 | - |