ASTM A453 Gr 660 Steel Round Bar Rod Manufacturer in China
ASTM A453 Grade 660 Round Bar is a high-strength, high-temperature resistant alloy, commonly used in applications requiring high stress resistance and good corrosion resistance. This grade is often chosen for its mechanical properties, especially in extreme environments.
Grade 660 is a specific grade of high-temperature bolting material . Also known as Grade 660, Grade 660A, Grade 660B,Grade 660C,Grade 660D.
it is commonly referred to as “A286” . The chemical composition and mechanical properties of Grade 660 bolting material make it suitable for high-temperature service in various industries such as petrochemical, aerospace, and power generation.
ASTM A453 Grade 660 Round Bars Specification
| ASTM A453 Gr 660 Round Bars Specifications | ASTM A453, ASME SA453 |
|---|---|
| Round Bar Size | 3mm~ 800mm |
ASTM A453 Grade 660 is a high-strength steel alloy primarily used in applications requiring elevated-temperature service. It is a precipitation-hardening austenitic stainless steel with good corrosion resistance and excellent mechanical properties. Its composition varies slightly depending on the exact class (Class A, B, C, or D),
Chemical Compostion of ASTM A453 Grade 660 round bar
| Element | Composition Range (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | 0.50–1.50 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.04 |
| Sulfur (S) | ≤ 0.03 |
| Chromium (Cr) | 15.0–17.0 |
| Nickel (Ni) | 24.0–27.0 |
| Molybdenum (Mo) | 1.00–1.50 |
| Vanadium (V) | 0.10–0.50 |
| Columbium (Cb) | 0.15–0.45 (or Nb) |
| Iron (Fe) | Balance |
quivalent Grades of ASTM A453 Gr 660 Round Bars
| AISI | UNS | BS | Wr No. | En Name | DIN EN | JIS | AMS | ASTM | other names | Additional Requirements |
|---|---|---|---|---|---|---|---|---|---|---|
| 660 | S66286 | HR 51 | 1.4944 | X6NiCrTiMoV26-15 | 10269 | SUS 660 | 5726 | ASTM A453 GRADE 660A | incoloy a286 | NACE MR-0175 |
ASTM A453 Grade 660 Round Bars Mechanical Properties
| Grade 660 | A, B and C | 130 | 895 | 85 | 585 | 15 | 18 | 248-341 | 24 HRC | 37 HRC |
|---|---|---|---|---|---|---|---|---|---|---|
| Grade 660 | D | 130 | 895 | 105 | 725 | 15 | 18 | 248-341 | 24 HRC | 35 HRC |
