pin This RFQ was sourced on www.MFG.com in USA for Hardening This material is high speed steel (PM4), and needs to be hardened to 61/63 rockwell, and will require 4 draws. We will send the 9 lbs. of (qty.114) pins to the vendor UPS, and vendor to return UPS. Buyer Information Industry City/Region Clinton Township, Michigan Country USA RFQ RFQ Number 330791 Material Alloy Steel Material Grade High Speed Steel - PM4 Technical Specifications Category Hardening Dimensions The following suppliers (machine shops, fabricators, casters, molders, 3D printing, CNC machining, etc.) provide manufacturing services for the machine tool industry, automotive industry… For more information visit www.MFG.com. MFG.com analyzes all engineered parts and RFQs for improved manufacturability and to ensure quality and a quick quoting experience. Hardening: Hardening steel increases its strength and durability. A key element in the hardness level achieved is the steel's carbon content. Some alloys must be carbon-enriched prior to hardening. Hardening of steel is achieved by heating it and then rapidly cooling it by quenching the steel in either water, salt water, oil, or a polymer bath.