Table of Contents
ToggleIn essence, ASTM A194 Grade 2HM is a specification of heavy hex nuts, made of carbon and alloy steel, although similar in all regards to ASTM A194 Grade 2H except for the fact that it requires the added criterion of hydrogen service as well as high temperature. The “M” in the specification stands for “Modified” and thus signifies that these nuts have an additional treatment like annealing with the aim of improving their mechanical properties and the resistance to particular environmental conditions.
ASTM A194 Grade 2HM nuts are made with carbon and alloy steel, similar to Grade 2H, but specifically designed for hydrogen sulfide (H2S) services commonly used in oil and gas industries. They are hardened to enhance their strength and toughness. Other hardness control and tempering processes also conclude to its excellence in performance within corrosive environments and under high temperatures.
Hydrogen Embrittlement Resistance: Grade 2HM nuts are treated to specifically develop resistance to hydrogen embrittlement, an important requirement in environments rich with hydrogen or H2S where regular fasteners could break.
High-Temperature Operating Properties: The heat treatment process enables these nuts to retain their strength and integrity even at higher temperatures for pressure vessels and flanges or high-temperature systems.
Controlled Hardness: The nuts are controlled to a certain hardness level. This will provide proper toughness rather than to the point of becoming brittle, which in extreme situations may be problematic.
Compatibility: ASTM A194 Grade 2HM nuts can accept high-strength bolts of ASTM A193 Grades B7M and B16 for solid high-strength fastening solutions in critical applications in industry.
ASTM A194 Grade 2HM nuts are, in particular, very suitable for high-pressure applications with high temperature conditions, or where exposure to hydrogen or H2S is anticipated. They are proven to strike a balance between toughness and strength as well as resistance to embrittlement so that they could be fastened with safety in conditions.
Element | Carbon Steel |
---|---|
CompositionA, % | |
Carbon | 0.15 min |
Manganese | 1.00 max |
Phosphorus | 0.04 max |
Sulfur | 0.05 max |
Silicon | 0.40 max |
The city we supply ASTM A194 Grade 2HM 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 2HM Bolt, Nuts, Washers worldwide: | ||||
Saudi Arabia | Oman | Kuwait | Netherlands | Iran |
Bahrain | Qatar | UAE | Africa | China |
Nigeria | Mexico | Canada | Venezuela | United Kingdom |
United States | South Africa | Malaysia | Bangladesh | Turkey |
Singapore | Sri Lanka | Australia | Brazil | Germany |
France | Italy | South Korea | Poland | Belgium |