{"product_id":"starrett-57641-a2-tool-steel-flat-stock-7-8-x-3-x-18-in","title":"Starrett 57641 A2 Tool Steel Flat Stock 7\/8 X 3 X 18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 57641 is an A2 air-hardening tool steel flat stock bar sized at 7\/8 inch thick, 3 inches wide, and 18 inches long. A2 tool steel is a cold-work die steel that air hardens, meaning it transitions from a soft, machinable state to a hardened, wear-resistant condition without oil or water quenching. That characteristic reduces distortion and cracking during heat treatment. Machinists, tool-and-die makers, and toolroom technicians use this stock to fabricate punches, dies, gauges, jigs, and other precision tooling components. Thickness, width, and squareness tolerances are held to +0.010 to 0.015 inches, and length tolerance is +0.25 inches, supporting accurate layout and machining in the annealed condition before hardening.\u003c\/p\u003e\n\u003cp\u003eThis flat stock is suited for job-shop and industrial toolroom applications where consistent stock dimensions and predictable heat-treat response are required. Common uses include blanking and forming dies, shear blades, trim dies, and precision fixtures. The 18-inch length makes it practical for moderate-length tooling blanks without requiring initial cutoff of large bar stock. It ships in the annealed condition, ready for machining to final geometry before heat treatment. Package quantity is 1 piece.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAISI A2 air-hardening tool steel — reduced distortion versus oil-hardening grades during heat treatment\u003c\/li\u003e\n  \u003cli\u003eAnnealed condition — fully machinable as received before hardening\u003c\/li\u003e\n  \u003cli\u003eThickness: 7\/8 inch; Width: 3 inches; Length: 18 inches\u003c\/li\u003e\n  \u003cli\u003eThickness, width, and squareness tolerances held to +0.010 to 0.015 inches\u003c\/li\u003e\n  \u003cli\u003eLength tolerance +0.25 inches\u003c\/li\u003e\n  \u003cli\u003eSingle-piece package — no minimum quantity above one bar required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or general toolroom flat stock for applications requiring AISI A2 air-hardening tool steel in 7\/8 x 3 x 18 inch bar form.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eMachining and heat treatment of A2 tool steel should be performed by qualified toolmakers or heat-treat technicians following the steel manufacturer's published hardening and tempering procedures. Always follow proper personal protective equipment practices when grinding, cutting, or handling hardened tool steel. Heat treatment equipment should be calibrated and operated per applicable shop safety and metallurgical procedures. Consult material data sheets for recommended hardening temperatures, soak times, and tempering cycles specific to the final application.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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 A2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.875 inches (7\/8 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 3 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: +0.010 to 0.015 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth Tolerance\u003c\/strong\u003e: +0.010 to 0.015 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Tolerance\u003c\/strong\u003e: +0.010 to 0.015 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Tolerance\u003c\/strong\u003e: +0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 13.39 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31231200\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 57641\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51541661679922,"sku":"57641","price":723.59,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd4885fbdd426ecb0fa6c3cc24fba2db_2c3bc62d-ff51-41cd-8e49-03d0fd4f1478.jpg?v=1785881456","url":"https:\/\/voomisupply.com\/products\/starrett-57641-a2-tool-steel-flat-stock-7-8-x-3-x-18-in","provider":"Voomi Supply","version":"1.0","type":"link"}