{"product_id":"starrett-57318-a2-tool-steel-flat-stock-3-32x4x36-in","title":"Starrett 57318 A2 Tool Steel Flat Stock 3\/32x4x36 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 57318 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, die makers, and machinists who need a precision-ground blank ready for heat treatment. Measuring 3\/32 inch thick, 4 inches wide, and 36 inches long, this flat stock holds a thickness tolerance of plus or minus 0.001 inch and a width tolerance of plus 0.000 to 0.005 inch, making it suitable for close-tolerance tooling applications. At 4.4 pounds, the bar offers substantial stock for blanking punches, dies, guides, fixtures, and similar tool room components.\u003c\/p\u003e\u003cp\u003eA2 air-hardening tool steel is a general-purpose cold-work grade widely used in production tooling, jigs, and gauges. It hardens with an air quench, reducing distortion compared to oil-hardening grades, which makes it a practical choice for flat components where dimensional stability after heat treatment is critical. This bar is appropriate for job shop, tool room, and maintenance machining environments where stock must be cut, ground, and heat treated to final part dimensions.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI A2 air-hardening tool steel — reduced distortion during heat treat compared to oil-quench grades\u003c\/li\u003e\n\u003cli\u003eThickness tolerance of plus or minus 0.001 inch for close-tolerance tooling work\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of plus 0.000 to 0.005 inch\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.25 inch\u003c\/li\u003e\n\u003cli\u003eSquareness: edge all 0.003 per inch\u003c\/li\u003e\n\u003cli\u003eSquare tolerance of plus or minus 0.001 inch\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard A2 air-hardening tool steel flat stock blank suitable for cold-work tooling applications including dies, punches, guides, and fixtures that require air-quench heat treatment.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eCutting and grinding of tool steel flat stock should be performed by a qualified machinist or toolmaker using appropriate coolant to prevent localized overheating of the material. Heat treatment of A2 steel requires controlled atmosphere or vacuum furnace conditions and should follow the material manufacturer's recommended austenitizing and quench procedures. Always wear appropriate PPE when machining or grinding tool steel. Consult applicable shop safety standards before cutting or heat treating.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: A2 Air-Hardening Tool Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Specification\u003c\/strong\u003e: AISI Type A2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 3\/32 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 36 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness Tolerance\u003c\/strong\u003e: plus or minus 0.001 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Tolerance\u003c\/strong\u003e: plus 0.000 to 0.005 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: plus 0.25 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Tolerance\u003c\/strong\u003e: plus or minus 0.001 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquareness\u003c\/strong\u003e: Edge all 0.003 per inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4.4 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31231200\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: STARRETT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 57318\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51542920954162,"sku":"57318","price":489.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd4885fbdd426ecb0fa6c3cc24fba2db_91dd9f95-870c-407c-9b8e-d7c78c19c820.jpg?v=1785911030","url":"https:\/\/voomisupply.com\/products\/starrett-57318-a2-tool-steel-flat-stock-3-32x4x36-in","provider":"Voomi Supply","version":"1.0","type":"link"}