Yousef Steel, a reputable manufacturer and supplier located in Riyadh, Saudi Arabia, proudly presents its high-quality **Alloy Steel Grade 2HM bolts**. These bolts are meticulously designed for **critical high-pressure and sour service applications** across various industries, including **oil & gas**, **petrochemical processing**, **power generation**, and **offshore platforms**.
Meeting the standards of **ASTM A194 Grade 2HM**, these bolts are crafted from **medium carbon alloy steel** that undergoes a rigorous process of **quenching, tempering, and strain-hardening**. This ensures a **controlled hardness** (≤ 235 HBW), making them compliant with **NACE MR0175 / ISO 15156** for use in **hydrogen sulfide (H₂S) environments**. This feature makes 2HM bolts particularly effective in preventing **sulfide stress cracking** and **hydrogen embrittlement** in **sour gas and other corrosive conditions**.
| Specifications | : | ASTM A 194 ASME SA 194 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to 2HM mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts |
| Alloy Steel 2HM | 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.
With impressive **tensile strength (\~760 MPa)** and dependable **impact resistance**, Grade 2HM bolts maintain a lower hardness compared to Grade 2H, making them safe for use in **corrosion-sensitive applications**. They are often paired with **B7M or L7M studs** in flanged joints, pressure-retaining components, and essential structural assemblies.
Yousef Steel offers these bolts in a range of configurations, including **heavy hex bolts, stud bolts, socket bolts**, and custom-engineered designs. Surface treatments such as **PTFE coating, hot-dip galvanizing, zinc plating**, or **black oxide** are available to enhance durability. All products come with **EN 10204 3.1/3.2 certification**, **mill test reports**, and the option for **third-party inspection** to ensure they meet the highest quality and industry standards.
Yousef 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 Riyadh, Saudi Arabia.
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