O-1 OIL HARDENING DRILL ROD ROUND Carbon – .95% Manganese – 1.20% Silicon – .25% For 1/4" round and larger, we carry oil hardening drill rod rather than water hardening. The O-1 in this size range is characterized by good machineability, smooth finish as well as superior dimensional stability and excellent hardening characteristics. We recommend it for use in dies, tools, parts, and punches. Excellent for general use in the shop. HARDENING: Heat slowly to 1475deg F. – 1525deg F. If a controlled furnace is not available, use 1500deg Tempilaq. Hold at this temperature for a few seconds then quench in a light quenching oil. TEMPERI Mfg: Brownells SPECS: Rods are 18" in length.
