{"product_id":"starrett-57581-a2-tool-steel-flat-stock-0-25x0-5x18-in","title":"Starrett 57581 A2 Tool Steel Flat Stock 0.25x0.5x18 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 57581 is an A2 air-hardening tool steel flat stock bar measuring 0.25 inches thick, 0.5 inches wide, and 18 inches long. A2 tool steel is an air-hardening, cold-work die steel known for its dimensional stability during heat treatment and its balance of toughness and wear resistance. This flat stock is precision-ground to close tolerances, making it suitable for tool and die makers, machinists, and mold makers who need reliable raw stock for fabricating punches, dies, gauges, and similar precision tooling components. The piece weighs 0.64 pounds and ships as a single unit.\u003c\/p\u003e\u003cp\u003eThis flat stock is used in job shops, tool rooms, and manufacturing facilities where precision cold-work tooling is produced. It is an appropriate starting material for applications requiring moderate wear resistance combined with good toughness after hardening, such as blanking dies, forming tools, and short-run stamping tooling. The 18-inch length provides workable stock for most bench-scale tooling projects without requiring additional cut-down from longer bar stock.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eA2 air-hardening tool steel offers excellent dimensional stability during heat treat, reducing post-hardening grinding\u003c\/li\u003e\n\u003cli\u003eTight thickness, width, and square tolerances of plus 0.010 to 0.015 inches support accurate layout and machining\u003c\/li\u003e\n\u003cli\u003eLength tolerance of plus 0.25 inches provides consistent stock length across pieces\u003c\/li\u003e\n\u003cli\u003eSingle-piece packaging with no minimum order quantity beyond one unit\u003c\/li\u003e\n\u003cli\u003eAISI Type A2 material specification for traceable material identification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard A2 air-hardening tool steel flat bar for use in general tool and die fabrication applications where AISI A2 cold-work tool steel is specified.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eA2 tool steel flat stock is machined, ground, and heat-treated by qualified tool and die makers or machinists. Follow established shop practices for cutting and grinding tool steel, including appropriate coolant use to prevent overheating the material edge. Heat treatment should follow the material manufacturer's recommended austenitizing and air-quench procedure for AISI A2 steel. Handle precision-ground stock carefully to avoid nicking or burring the ground surfaces before use.\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: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 0.5 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\u003eSquare 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\u003eWeight\u003c\/strong\u003e: 0.64 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\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: 57581\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51542317891890,"sku":"57581","price":92.01,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd4885fbdd426ecb0fa6c3cc24fba2db_4aeb151c-8de9-438e-b988-41250abfb129.jpg?v=1785897983","url":"https:\/\/voomisupply.com\/products\/starrett-57581-a2-tool-steel-flat-stock-0-25x0-5x18-in","provider":"Voomi Supply","version":"1.0","type":"link"}