Specification Brand : USA Knifemaker Supply BulletPoint : Most versatile stainless steel BulletPoint1 : 4140 is a lower carbon alloy steel that is extremely tough steel great for making hammers BulletPoint2 : This round stock is sold in 12" pieces BulletPoint3 : This steel is Cold Drawn (CR) and comes fully annealed BulletPoint4 : Choose between 1.5" or 2" diameter BulletPoint5 : Features: High , high hardness and high stability. Color : Silver ExternallyAssignedProductIdentifier : 7427004081720 ItemDiameterTolerance : -.001 to +.001" inches ItemForm : Round Bar ItemName : 4140 Round Stock Steel- 12" Long- Use for Making Hammers, Cold Rolled and Annealed (1, 2) ItemPackageDimensions_Height : 49.53 centimeters ItemPackageDimensions_Length : 1.27 centimeters ItemPackageDimensions_Width : 1.27 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : stainless-steel-rods Manufacturer : USA Knifemaker Material : Stainless Steel ModelNumber : LIANGLIDEy4buwartmd NumberOfItems : 1 PartNumber : 4140 ProductDescription : Heat Treatment for 4140 Carbon Steel Austenitizing temp 1550 to 1600°F Quench in Parks AAA Temper 400°F twice for 2 hours each time. Cool to room temperature in between tempers. This Should give a hardness of 50HRC ProductSiteLaunchDate : 2024-03-15T18:39:38.263Z Size : 2 SupplierDeclaredDgHzRegulation : unknown SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1