Eastern Tool
Steel Service, Inc.

1045 Delaum Rd.

P.O. Box 857

St. Marys, Pa 15857

Phone: (814) 834-7224
Fax: (814) 834-7225
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Z-Wear PM Tool Steel Data Sheet


Z-Wear PM is a PM grade of cold-work tool steel that offers high value, exceptional versatility, high toughness and high hardness. It offers wear resistance better than A-2 and D-2, and a high amount of toughness even at the hardness level of RC 63. Z-Wear PM exhibits excellent machinabilty and grindability as well as heat treat response. Common tool coatings and surface treatments adhere well to this substrate.


Chemical Composition

Carbon 1.15%
Tungsten 1.00%
Chromium 7.50%
Molybdenum 1.60%
Vanadium 2.40%

Typical Applications

Stamping PunchesForming Punches
Thread Rolling ToolsFine Blanking Tools
Nozzles and ScrewsPowder Compaction Punches
Plastic Injection Molding


Z-Wear-PM tool steel comparison chart

Thermal Treatments

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.

Hardening Data


Temperature
 

1850F

1900F

1950F

2000F

2050F

C
 

F
 

(1025C)

(1040C)

(1065C)

(1095C)

(1125C)


As Quenched

60

61

62

63

64

OPTIMUM FOR MAXIMUM TOUGHNESS AND EFFECTIVE STRESS-RELIEVING.

540

1000

57

59

61

62

64

550

1025

55

57

58

61

62

565

1050

51

54

55

57

59


NOTE A:
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)
 

60

45

30

20

15

MINIMUM NUMBER
OF TEMPERS (2 HRS)
 

2

2

3

3

3


Surface Treatments

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.

Annealing

Heat to 1600F (870C), hold 2 hours, slow cool 30F (15C)/hour maximum) to 1000F (540C), air cool.

Typical annealed hardness: 225/248 BHN.

Stress Relieving

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

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)

Physical Properties

Modulus of Elasticity30psix10(6)(210 GPa)
Density0.277 lb/in3(7565 kg/M3)
Thermal Conductivity13.5 BTU/hr./ft./F22 W/m/ K)

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