EXTRA DISCOUNTS: Purchase this item by itself or with any other items from Precision Marshall's category to receive an extra discount based on the total value of category products in your Shopping Cart. Click the link for more information.This Super-7 Oversize Tolerance Ground Flat Stock is made by Precision Marshall Steel Company. The steel type is AISI S-7 shock-resistant tool steel, annealed for easier machining.Super-7 is suitable for use in applications requiring high impact strength such as shears, punches, blanking dies and chisels. Its superior soundness makes it suitable for high-hardness plastic molds and zinc die casting dies.The standard nominal sizes are ground to a satin finish on four sides, free of decarburization, held to tight tolerances in dimensions and squareness, and ready for layout. Each piece is lightly coated with rust-preventive oil and individually packaged in a vapor-resistant envelope which has the size and steel type clearly marked. At least one end is painted black for easier identification of the steel type.The oversize Thickness |T| tolerance is +.010/+.015". The oversize Width |W| tolerance is +.010/+.015". The 18" Length |L| tolerance is +.125/.250". The 36" Length |L| is tolerance +.250/.500".The available thicknesses are 1/8 to 1/2 inches. The available widths are 1/2 to 6 inches. Please contact us if you need a different size, or if you need us to make any alterations.DELIVERY TIME: Normally in stock and ships the next business day.SHIPS FROM: Precision Marshall products are sent directly to you from the warehouses in Bolingbrook, IL; Hartford, CT; Euless, TX; or Santa Fe Springs, CA.MINIMUM ORDER: None.HEAT TREATMENT: SUPER-7 is subject to decarburization during heat treatment, so a protective atmosphere furnace or a vacuum furnace should be used. After preheating 1200/1250°F, soak material for one half hour per inch of thickness. When material reaches this temperature, heat to 1725°F, then soak material for one half hour per inch of thickness when material is up to this temperature. Air cool or oil quench to hand warm (approximately 150°F) and temper immediately. Note: Sections over two inches thick should be interrupt oil quenched or full oil quenched to attain full hardness.TEMPERING DATA: Double temper one hour per inch of section thickness to desired hardness at a heating rate of two hours per inch. Cool in air to room temperature between the two tempers. Representative hardness levels after tempering are tabulated below. Oil quenched from 1725°F. Tempered 4 Hours.
Worked great From Anonymous of Albertville, Alabama on 5/9/2022.
Great product and great service.
S7 Ground Flat Stock From Allan Wicklund of Quincy, Massachusetts on 8/24/2015.
It's made in USA S7 Flat Ground Tool Steel, what's not to like about it.The incredible thing is the price and service that Die Supply offers. We will make them our primary source.
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