Luke Steel offers precision-engineered Alloy Steel Gr 2H Washers from Houston, Houstan, which are produced for high-pressure and structural use. These hardened flat washers are designed to go with Gr 2H bolts and nuts in flanged heavy-load connections. Compliant with ASTM A194 standards, Gr 2H washers are heat-treated for maximum durability and load transfer. They are applied where firm and vibration-proof connections are needed in high-stress applications. With wear-resistant construction and resistant coatings being available, Luke Steel‘s Gr 2H washers provide long-term seal integrity and load evenness, supporting pipelines, pressure vessels, structural frames, and flanged systems.
Gr 2H Washers consist of medium carbon steel with 0.40% carbon and trace amounts like manganese and sulfur. They are tempered and quenched for enhanced hardness, tensile strength (~860 MPa), and yield strength (~690 MPa). They provide improved toughness and consistent load distribution under bolt stress. Heat treatment gives them improved microstructure, decreasing the likelihood of deformation or compression under load. Gr 2H washers provide consistent mechanical performance in high-temperature and corrosive industrial conditions, especially when combined with corresponding bolts and nuts in pressure-rated assemblies.
| Specifications | : | ASTM A 194 ASME SA 194 |
| Standard | : | IS, ASTM, BS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Flat Washer, Lock Washer, Sealing Washer, Split Washer, Slot Washer, Machine Washer, Star Washer SPRINGS – Wire Spring & Flat Spring. |
| Alloy Steel 2H | 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 2H | 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.
Alloy Steel Gr 2H Washers are extensively used in pressure piping, valve assemblies, heat exchangers, and bolting in structural applications in oil refineries, petrochemical plants, and power plants. These washers provide stable load transfer and avoid bolt loosening under dynamic or vibration-intensive conditions. They play a vital role in flanged joints where torque retention and sealing integrity are essential. Gr 2H washers find application in bridge building, steel fabrication, and mechanical joints. Luke Steel offers washers with multiple coatings such as zinc plating and hot-dip galvanizing to provide corrosion resistance for both indoor and outdoor conditions.
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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