Available Shapes
1.2379 Tool Steel
1.2379 / X155CrVMo12 steel suppliers and stockholders delivering to the whole of the Middle East. Nifty Alloys LLC are suppliers of 1.2379 high carbon, high chromium tool steel in round bar, plate, sheet and block which can be bandsaw cut to your requirements. A tool steel grade offering very high wear resistance and toughness 1.2379 tool steel hardens in air with a low order of movement and offers a measure of corrosion resistance when polished. It is used for tools operating under conditions of severe wear and abrasion or as an alternative to oil hardening tool steel grades when long runs are required.
Applications
Analysis
Ground Flat Stock
Forging
Annealing
Stress Relieving
Hardening
Applications
A popular grade for toolmakers, this tool steel is used in a wide variety of tool making applications. Typical applications include punching and blanking dies for stainless steel sheet, brass, copper, zinc and hard abrasive materials generally. Other application suitable for this tool steel include deep drawing dies, cupping dies, forming dies, sheet metal forming rolls, shear blades for strip and sheet including flying shears, circular cutters for cold rolled strip, trimmer dies, thread rolling dies, cold extrusion dies, broaches, plug gauges, ring gauges, master hobs for cold hobbing plastic moulds, cut moulds for plastics, special taps, straybolt taps, brick and tile mould liners.
Analysis
| Carbon | 1.45-1.60% | Chromium | 11.00-13.00% |
| Manganese | 0.20-0.60% | Phosphorous | 0.030% max |
| Molybdenum | 0.70-1.00% | Sulphur | 0.030% max |
| Vanadium | 0.70-1.00% |
Ground Flat Stock
Subject to size, suitability and availability 1.2379 pieces can be produced as ground flat stock in approximately 2 to 3 weeks. Standard and non-standard sizes are available.
Forging
Heat the 1.2379 tool steel slowly and uniformly to 700°C then more rapidly to 900-1040°C. After forging cool down slowly.
Annealing
As supplied 1.2379 is in the annealed and machineable condition. Re-annealing will only be necessary if the steel has been forged or hardened by the toolmaker. To anneal, heat slowly and uniformly to 900°C. Soak for three to four hours and allow to cool in the furnace to room temperature. Re-heat to 800-1040°C and again soak for three to four hours. Allow to cool in the furnace to room temperature.
Stress Relieving
If tools are heavily machined, ground or otherwise subjected to cold work, the relief of internal strains is advisable before hardening to minimise the possibility of distortion. Stress relieving should be done after rough machining. To stress relieve, heat the 1.2379 steel component to 600-650°C. Soak well and cool in the furnace or in air. The tools may then be finish machined before hardening.
Hardening
It is preferable to heat the tools in a controlled atmosphere. If this is not possible, pack hardening is recommended. A reducing atmosphere is desirable. Pre heat the 1.2379 tool steel component to 750-800°C. and allow to soak at this temperature. The tool temperature should then be brought up to 1000-1040°C for air cooling, or 980°C for oil quenching. Soak thoroughly at the temperature for thirty minutes per 25mm of ruling section, then cool or quench accordingly. It is important not to exceed 1020°C when heating for hardening.
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