PM Tool Steel
Z-Wear PM Tool Steel Data Sheet
|Stamping Punches||Forming Punches|
|Thread Rolling Tools||Fine Blanking Tools|
|Nozzles and Screws||Powder Compaction Punches|
|Plastic Injection Molding|
Preheat : 1500/1550F (820/845C), equalize, Second preheating stage at 1700/1750F (925/955C)recommended for vacuum or atmosphere hardening. equalize.
Austenize : 1850/2050F (1010/1120C), 30/45 minutes at temperature. Standard recommendation to achieve RC 60-62 after tempering is to use 1950F (1065C)
Quench : Air, salt, oil or atmosphere quench to 1000-1100F(540-595C), equalize, then air cool to below 125F(50C) or hand warm. Vacuum or atmosphere quench rate through 1850-1300F(1010-705C) range is critical to achieve optimum heat treat results. Step quenching can reduce distortion on large tools.
Temper : 1000F (540C) minimum, hold 2 hours at temperature, air cool. Temper twice minimum. Triple tempering is recommended if austenizing at 1950F (1065C)or above.
Cryogenic Treating : Refrigeration treatments may improve long term dimensional stability by transforming retained austenite. Refrigeration treatments should generally be performed after the first temper, and must be followed by a temper.
|OPTIMUM FOR MAXIMUM TOUGHNESS AND EFFECTIVE STRESS-RELIEVING|
RESULTS MAY VARY WITH HARDENING METHOD AND SECTION SIZE. SALT OR OIL QUENCHING WILL GIVE MAXIMUM RESPONSE. VACUUM OR ATMOSPHERE COOLING MAY RESULT IN UP TO 1-2 HRC POINTS LOWER.
|MINIMUM TIME AT|
AUST TEMP (MINS)
OF TEMPERS (2 HRS)
Z-Wear PM can be nitrided, steam tempered or titanium-nitride coated if desired. If the CVD TiN treatment is used, care is required in vacuum hardening. Consult your coating vendor to select the optimum process for your application.
Heat to 1600F (870C), hold 2 hours, slow cool 30F (15C)/hour maximum) to 1000F (540C), air cool.
Typical annealed hardness: 225/248 BHN.
Annealed Material: Heat to 1100/1300F(595/740C), hold two hours, cool in still air.
Hardened Material: Heat to 25F(15C) below original tempering temperature, hold two hours, cool in still air.
Welding of Z-Wear PM is generally not recommended due to the fine-grain microstructure produced by the PM process. If weld repair must be performed, use air hardening tool steel filler material.
Annealed Material: Preheat 1000/1100F(540/595C), maintain over 1000F(540C) during welding. Reanneal or temper 1550F(845C) 6 hours after welding.
Hardened Material: Preheat to 25F(15C) below original tempering temperature (1000F(540C) minimum). Maintain above 900F(480C) during welding. Cool to 150F(65C) after welding. Temper 25F(15C) below original tempering temperature. Minimum 1000F(540C)
|Modulus of Elasticity||30psix10(6)||(210 GPa)|
|Density||0.277 lb/in3||(7565 kg/M3)|
|Thermal Conductivity||13.5 BTU/hr./ft./F||22 W/m/ °K)|