Luke Steel is a reliable supplier of Alloy Steel Gr 2HM Fasteners from Houston, USA. As suitable for sour service and high-pressure use, the fasteners are made of quenched and tempered alloy steel in accordance with ASTM A194 standards. Gr 2HM fasteners undergo special treatment for resisting hydrogen sulfide (H₂S) cracking, which makes them suitable for offshore and petrochemical applications. The fasteners possess high strength, excellent corrosion properties, and accurate threading, which makes them essential in flanged joints and high-stress environments. Luke Steel provides superior mechanical performance, dimensional consistency, and service life with even extreme chemical and mechanical stress.
Gr 2HM Fasteners are alloy steel with 0.40% carbon, added with chromium, molybdenum, and manganese to provide better corrosion resistance and hardenability. Upon quenching and tempering, they meet the minimum tensile strength of 860 MPa and yield strength of 690 MPa. They are hydrogen stress crack-resistant, showing better hardness and mechanical integrity. Gr 2HM is highly tough, impact resistant, and structurally stable over long periods. Made for unforgiving conditions, the alloy delivers superior performance in sour gas, high-pressure, and corrosive service conditions.
Specification : ASTM A 194 ASME SA 194
Standard : DIN, ASTM, BS and all International Standards
Length : 3 mm to 2 mm
Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Types : Nuts, Bolts, Screws, Sockets, Studs, Screw, Hex Set Screw, Socket Screw, Cap Screw, Pan Head Screw, Socket Head Cap Screw, Washers, Spring Washers, Studs, Anchors
| Alloy Steel 2 | C | Mn | P | S | Si | Ni | Cr |
| 0.40% min | 1.00% max | 0.040% | 0.050% | 0.40% max | – | – |
| Specification | Material | Nominal Size, In. | Tempering Temp. °F | Proof Load Stress, ksi | Hardness Rockwell | See Note | |
|---|---|---|---|---|---|---|---|
| Min | Max | ||||||
| ASTM A194 Grade 2HM | Medium Carbon Steel, Quenched and Tempered | 1/4 – 4 | 1000 | 150 | 159 | 237 | 1,2,3 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Hexagon Bolts / Set Screws | Stud Bolts | Hexagon Nuts | Socket Capscrews |
|---|---|---|---|
DIN 931 | BS4882 | DIN 934 | DIN 912 |
DIN 933 | DIN 976 | BS 1768 | DIN 6912 |
BS 1768 | BS 1769 | DIN 7984 | |
UNI 5731 | BS 1083 | ANSI B18.3 | |
UNI 5739 | BS 3692 | ISO 4762 | |
ISO 4014 | ISO 4032 | UNI 5931 | |
ISO 4017 | ISO 4033 | BS 2470 | |
BS 1769 | ANSI B18.2.2 | BS 4168 | |
BS 3692 | |||
ANSI B18.2.1 | |||
Socket & Slotted Set Screws | Socket & Slotted Countersunk Screws | Studs | Washers |
DIN 913 | DIN 963 | DIN 938 | DIN 125 |
DIN 914 | DIN 7991 | DIN 939 | DIN 9021 |
DIN 915 | BS 4168 | DIN 2510 | BS 4320 |
DIN 916 | BS 1981 | BS 4439 | BS 3410 |
DIN 551 | BS 483 | BS 2693 | |
DIN 553 | BS 2470 | Spring Washers | |
DIN 438 | DIN 127 | ||
BS 4168 | BS 4464 | ||
BS 1802 |
Alloy Steel Gr 2HM Fasteners find application in flange connections, heat exchangers, reactors, and piping systems for offshore drilling, H₂S-rich process streams, and refineries. Their resistance to hydrogen embrittlement makes them ideal for sour gas pipelines and pressure vessels. These fasteners are also employed in subsea installations, wellhead equipment, and in critical joints subjected to extreme temperature or pressure cycling. Luke Steel‘s Gr 2HM fasteners adhere to very high industry standards, providing secure and leak-free connections in highly corrosive and high-stress applications, where component failure is not acceptable.
Luke Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Houstan, USA.
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