A-11 Tool Steel Data Sheet

Common Tradenames: CPM® 10V®, Z A-11 PM, K294, A-11 PM, ASP® 2011

A-11 is designed with an air hardening base analysis with added high carbon and vanadium for exceptionally good wear resistance, toughness and strength for cold work tooling applications. The exceptional wear resistance and good toughness of A-11 make it an excellent candidate to replace carbide and other highly wear resistant materials in cold work tooling applications, particularly where cost effectiveness can be demonstrated.


Chemical Composition

Carbon 2.45%
Manganese 0.50%
Chromium 5.25%
Molybdenum 1.30%
Vanadium 9.75%
Silicon0.90%
Sulfur0.07%

Typical Applications

Blanking DiesCold Extrusion Dies
Forming DiesTrim Dies
Nozzles and Screw TipsShear Blades
Plastic Injection MoldingWear Inserts
Powder Compaction Dies and Pins


PM Tool Steel Comparison Chart


Thermal Treatments

Preheat : 1500/1550F (820/845C), equalize, Second preheating stage at 1800/1850F (1010/1040C)recommended for vacuum or atmosphere hardening. equalize.

Austenize : 1850/2150F (1010/1175C), 30/45 minutes at temperature. Standard recommendation to achieve RC 60-62 after tempering is to use 2050F (1120C)

Quench : 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.

Temper : 1000F (540C) minimum, hold 2 hours at temperature, air cool. Temper twice minimum. Triple tempering is recommended if austenizing at 2000F (1095C)

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

2050F

2100F

2150F

°C

°F

(1025C)

(1040C)

(1065C)

(1120C)

(1150C)

(1175C)


As Quenched

61

63

65

65

64.5

63.5

540

1000

56

57

60.5

62

63

64

OPTIMUM FOR MAXIMUM TOUGHNESS AND EFFECTIVE STRESS-RELIEVING.

550

1025

54

56

58.5

60

62

63

565

1050

52

54

56.5

58

60

61

595

1100

49

51

52

54

55

56

620

1150

44

45

46

48

50

51

650

1200

40

41

43

46

47

48


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

10

MINIMUM NUMBER
OF TEMPERS (2 HRS)

2

2

2

2

3

3


Surface Treatments

A-11 can be nitrided, steam tempered or titanium-nitride coated if desired. If the CVD TiN treatment is used, care is required in vacuum hardening.

Annealing

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

Typical annealed hardness: 255/277 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 A-11 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 Elasticity32psix10(6)(221 GPa)
Density0.268 lb/in3(7695 kg/M3)
Thermal Conductivity15 BTU/hr./ft./F26 W/m/ °K)



CPM and 10V is a registered trademark of Crucible Industries, LLC
ASP is a registered trademark of Erasteel

Sign up for your free Simply Tool Steel News Subscription

Enter your E-mail Address
Enter your First Name (optional)
Then

Don't worry — your e-mail address is totally secure.
I promise to use it only to send you Simply Tool Steel Newsletter.

Do you want to be the first to know?

Visit our


to get the most up-to-date articles. Subsrcibe by clicking on the orange RSS button on the left side. You will immediately receive any updates to Simply Tool Steel.