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[China]
Address: Room 1703, 17th Floor, Building 5, Jinyin Modern City, Guangdian South Road, Jinshui District, Zhengzhou City, Henan Province, China.
Contact name:Vicky
Zhengzhou Huitong Pipeline Equipment Co.,Ltd. |
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Alloy Steel ASTM A193 B7 Stud Bolt with ASTM A194 2H heavy hex nuts
1. ASTM A193 Grade B7 Bolts Specification
| Standards | Designation |
| ASTM | A193 B7 : Alloy Steel, AISI 4140/4142 quenched and tempered |
| Dimensions | ASME B18.2.1, B18.3 |
| Melt Origin | East Europe/South America/Korea/Japan |
| Product Origin | Made in India |
| Threads Configuration | ASME B1.1 2A/3A Inch Unified Threads and B1.13M 6h Metric Coarse Threads |
| Certification | Dual Certified As per ASTM & ASME Codes |
| Additional Certifications | PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified |
| Mandatory Requirements | Free from Mercury & Radioactive Contamination |
| Additional Requirements | NACE MR0103/MR0175/ISO 15156 Compliance |
2. ANSI and/or ASME Standards (inch series)
| ASME B18.1.1 | Small Solid Rivets | ASME B18.8.1 | Clevis Pins and Cotter Pins |
| ASME B18.1.2 | Large Rivets | ASME B18.8.2 | Taper Pins, Dowel Pins, Straight Pins, Grooved Pins and Spring Pins |
| ASME B18.2.1 | Square and Hex Bolts and Screws | ASME B18.9 | Plow Bolts |
| ASME B18.2.2 | Square and Hex Nuts | ASME B18.10 | Track Bolts and Nuts |
| ASME B18.2.6 | Fasteners for use in Structural Applications | ASME B18.11 | Miniature Screws |
| ASME B18.3 | Socket Cap, Shoulder and Set Screws | ASME B18.13 | Screws and Washer Assemblies (Sems) |
| ASME B18.5 | Round Head Bolts | ASME B18.15 | Forged Eyebolts |
| ASME B18.6.2 | Slotted Head Cap Screws, Square Head Set Screws, and Slotted Headless Set Screws | ASME B18.17 | Wing Nuts, Thumb Screws and Wing Screws |
| ASME B18.6.3 | Machine Screws and Machine Screws Nuts | ASME B18.21.1 | Lock Washers |
| ASME B18.6.4 | Thread Forming and Thread Cutting Tapping Screws and Metallic Drive Screws | ASME B18.22.1 | Plain Washers |
| ASME B18.7 | General Purpose Semi- Tubular Rivets, Full Tubular Rivets, Split Rivets and Rivet Caps | ASME B18.23.1 | Beveled Washers |
3. A193 gr b7 Chemical Composition
| Carbon | Manganese, max | Phosphorus, max | Sulfur, max | Silicon | Chromium | Molybdenum |
| 0.08-0.15 | 1.00 | 0.040 | 0.030 | 1.00 max | 11.5 – 13.5 | 0.15-0.25 |
4. B7 alloy steel bolts mechanical properties
| Grade | Diameter | Tensile Strength | Yield Strength | Elongation | Reduction | Hardness |
| Grade B7 | M64 and under | 860 | 720 | 16 | 50 | 321 HBW or 35 HRC |
| Grade B7 | Over M64 to M100 | 795 | 655 | 16 | 50 | 321 HBW or 35 HRC |
| Grade B7 | Over M100 to M180 | 690 | 515 | 18 | 50 | 321 HBW or 35 HRC |
5. A193 Grade
| B7 | Alloy steel, AISI 4140/4142 quenched and tempered |
| B8 | Class 1 Stainless steel, AISI 304, carbide solution treated. |
| B8M | Class 1 Stainless steel, AISI 316, carbide solution treated. |
| B8 | Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened |
| B8M | Class 2 Stainless steel, AISI 316, carbide solution treated, strain hardened |
