Alloy steel B7M bolts are made of chromium and molybdenum. This grade is commonly made of high-quality raw materials and equipment. These bolts are made of a combination of two primary alloys. The quality is manufactured using a ferritic and austenitic mixture. Alloy steel B7M bolts are usually quenched and tempered at the temperature 620°C. The minimum tensile strength of these bolts is 690 Mpa, whereas the minimum yield strength is 550 Mpa.
Alloy steel B7M bolts combination also includes some amount of manganese, carbon, molybdenum, phosphorus, silicon, etc.
Alloy steel B7M bolts are considered the most valued and demanded grade in various types of industries. These bolts are commonly used for joining two or more objects together. These are generally closed with the help of threaded or non-threaded nuts. Alloy Steel B7M bolts are highly weldable, and they support all types of heat treatments. Alloy Steel B7M bolts also provide extreme resistance from various chemical procedures such as corrosion, crevice corrosion, stress cracking, etc.
Alloy Steel B7M bolts are highly applicable in petrochemical, pharmaceutical, paper and pulp, and other industries constantly rising.
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| Specifications | ASTM F593, F594, F1554 / ASME SF593, F594, F1554 |
| Standard |
DIN : DIN 934, DIN 931, DIN 970, DIN 933 UTS : UNEF, NPT, UNC, UNS, UNF, NPTF ISO : JIS standards, ISO 4033, ISO 4032, ANSI – American National Standards Institute ASME B18.5 ANSI B 28.2.4 1M as per defined in ASME B16.5 standard length ANSI B 18.2.4 2M as per defined in ASME B18.2.2 |
| Size | M3 - M56 | 3/6" to 2" | Custom Sizes |
| Length | 3 mm to 200 mm | Custom Sizes |
| Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
| Form | Hex, Threading, Square, Round as per Gauge Etc. |
| Threads | Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically |
| Threads available | UNF, BSW, BSF, METRIC, UNC, or as required |
| Threads Configuration |
ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Certification | Dual Certified As per ASTM & ASME Codes |
| Test Certificate | As per EN 10204 / 3.1 Manufacturer Test Certificate, PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified |
| Raw materials Source | JSPL, Mukund Steel, Tata Steel, Dhamm Steel, Usha Martin,etc. |
| Packing | IN BULK: canton, pallet, Small Boxs / carton / pallet, or customer request |
| Surface Coating |
Cadmium Coating Hot Dipped Galvanizing Coating Ptfe Coated Phosphate Coating Teflon Coating Xylon Coating Zinc Coating |
| STANDARD | WERKSTOFF NR. | UNS |
| Alloy Steel B7M | - | - |
| Grade | C | Mn | Si | P | S | Co | Cr |
| Alloy Steel B7M | 0.37 - 0.49 | 0.65 - 1.10 | 0.15-0.35 | 0.035 | 0.040 | 0.15-0.25 | 0.75-1.20 |
| Grade | Diameter | Tensile Strength | Yield Strength | Elongation | Reduction | Hardness |
| Grade B7M | M100 and under | 690 | 550 | 18 | 50 | 235 HBW or 99 HRB |
| M100 and over | 690 | 515 | 18 | 50 | 235 HBW or 99 HRB |
