{"product_id":"starrett-57172-a2-tool-steel-air-hardening-flat-stock","title":"Starrett 57172 A2 Tool Steel Air-hardening Flat Stock","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 57172 is an A2 air-hardening tool steel flat stock bar sized at 0.25 inches thick, 2 inches wide, and 18 inches long. A2 tool steel is an air-hardening, cold-work alloy known for its dimensional stability during heat treatment and its balance of toughness and wear resistance. This flat stock is supplied in the annealed condition and is intended for fabrication into dies, punches, gauges, and cutting tools. Machinists, tool and die makers, and toolroom technicians use this material when consistent cross-section tolerances and predictable hardening response are required.\u003c\/p\u003e\u003cp\u003eThis flat stock is suited for general toolroom applications including die making, jig and fixture components, and precision blanks where tight dimensional control is needed before heat treatment. The bar is manufactured to AISI Type A2 material specification, making it appropriate for both prototype and production tooling work in machine shops and industrial maintenance environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAISI A2 air-hardening tool steel for stable, low-distortion heat treatment\u003c\/li\u003e\n\u003cli\u003e0.25 inches thick by 2 inches wide by 18 inches long flat bar profile\u003c\/li\u003e\n\u003cli\u003eThickness tolerance of plus 0.010 to 0.015 inches for consistent stock removal planning\u003c\/li\u003e\n\u003cli\u003eWidth tolerance of plus 0.010 to 0.015 inches\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.25 inches\u003c\/li\u003e\n\u003cli\u003eSquare tolerance of plus 0.010 to 0.015 inches\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 for use in toolroom, die-making, and precision machining applications requiring AISI A2 material specification.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eCutting, grinding, and machining should be performed by qualified machinists or tool and die makers using appropriate coolant to avoid surface overheating before heat treatment. Follow the material supplier heat treatment guidelines for A2 tool steel, including proper soak temperatures and air-quench procedures. Eye protection, gloves, and secure workholding are required when sawing or grinding flat stock. Do not torch-cut this material without awareness of its alloy composition and the effect of uncontrolled heat on its metallurgical properties.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Tool Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Specification\u003c\/strong\u003e: AISI A2 Air-Hardening\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 18 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness Tolerance\u003c\/strong\u003e: plus 0.010 to 0.015 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth Tolerance\u003c\/strong\u003e: plus 0.010 to 0.015 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: plus 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Tolerance\u003c\/strong\u003e: plus 0.010 to 0.015 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.55 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: 57172\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51541170880818,"sku":"57172","price":197.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd4885fbdd426ecb0fa6c3cc24fba2db_46602a62-d2d5-42d6-9412-feb1e1b2204c.jpg?v=1785869415","url":"https:\/\/voomisupply.com\/products\/starrett-57172-a2-tool-steel-air-hardening-flat-stock","provider":"Voomi Supply","version":"1.0","type":"link"}