Table of Contents
ToggleASTM A193 Grade B7 bolts are composed of chromium-molybdenum steel. These bolts possess outstanding mechanical properties with high tensile strength, abrasion resistance, and resistance to many other heat retaining jobs. The typical quenching and tempering of the fasteners within this grade is performed for the improvement of performance properties and can be used under high temperature conditions up to 450°C (840°F).
ASTM A193 Grade B7 provides the specification for the bolts, studs, threaded rods, and other overhead bolting fasteners made of high-strength, alloy steel. It gives the requirements for high-pressure and high-temperature conditions in petrochemical, oil and gas industries, power generation, and other industrial uses requiring reliable performance under extreme conditions.
Element | Ferritic Steel |
---|---|
Chromium-Molybdenum Alloy Steel | |
CompositionA, % | |
Carbon | 0.37 – 0.49 |
Manganese | 0.65 – 1.10 |
Phosphorus | 0.035 max |
Sulfur | 0.04 max |
Silicon | 0.15 – 0.35 |
Chromium | 0.75 – 1.20 |
Molybdenum | 0.15 – 0.25 |
Grade | Completed Nuts | Sample Nut After Heat Treatment | |||
---|---|---|---|---|---|
Brinell Hardness, BHN |
Rockwell Hardness | Brinell Hardness, BHN, min |
Rockwell Hardness, HRB, min |
||
HRC | HRB | ||||
7 | 248 – 327 | 24 – 35 | … | 201 | 94 |
The city we supply ASTM A194 Grade 7 Bolt, Nuts, Washers: | |||||
Bengaluru | Mumbai | Chennai | Hyderabad | Kolkata | Pune |
New Delhi | Ahmedabad | Jaipur | Surat | Salem | Gandhinagar |
Bhiwandi | Tiruppur | Sivakasi | Jamnagar | Thiruvananthapuram | Rajahmundry |
Bhubaneswar | Vijaywada | Firozabad | Bokaro Steel City | Rajkot | Bharuch |
Panna | Raipur | Cochin | Ludhiana | Panipat | Durgapur |
Peenya | Pimpri-Chinchwad | Channapatna | Kharagpur | Nashik | Bareilly |
Varanasi | Haldia | Rourkela | Bangalore | Moradabad | Indore |
Visakhapatnam | Trivandrum | Pithampur | Dibrugarh | Angul | Gwalior |
Coimbatore | Kannur | Nagpur | Vadodara | Rudrapur | Noida |
Agra | Bhagalpur | Jamshedpur | Bhilai | Lucknow | Kanpur |
Thane | Bhopal | Sri City | Bareilly | Hosdurg | Pithampur |
Countries we supply and export ASTM A194 Grade 7 Bolt, Nuts, Washers worldwide: | ||||
Saudi Arabia | Oman | Europe | Netherlands | Sweden |
Kenya | Ireland | Israel | South Africa | Afghanistan |
Zimbabwe | Mexico | Canada | Venezuela | United Kingdom |
United States | New Zealand | Malaysia | Bangladesh | Turkey |
Singapore | Sri Lanka | Australia | Brazil | Germany |
France | Italy | South Korea | Poland | Belgium |