Cts a11 pm

DESCRIPTION

CTSA11PM is a high vanadium tool steel produced using the PM (powder metallurgy) process. This grade has excellent wear resistance with very good toughness and strength making it well suited for many cold work tooling applications.

*Equivalent in hardness, wear resistance and heat treating response to CPM 10V alloy

CHEMICAL COMPOSITION

C - 2.45
Cr - 5.25
Mo - 1.3
W - -
Co - -
V - 9.75

STANDARDS

USA: AISI A11

DELIVERY HARDNESS

Soft annealed max. 280 HB

APPLICATIONS

Knives
Wear parts
Cold work
Plastic Mold Parts
Stamping and Forming Tools
Punches and Dies
Nozzles
Screw Tips
Plastic Mold Parts
Powder Compaction Tools

HEAT TREATMENT

Annealing: Heat to 1600°F, hold two hours, slow cool 30°F/hour to 1000°F, then air or furnace cool to room temperature
Stress-relieving at 1110°F to 1290°F for approximately 2 hours, slow cooling down to 930°F.
Hardening: Preheat to 1500-1550°F. Equalize second pre-heat stage at 1800-1900°F suggested for vacuum or atmosphere hardening.
Austenitize: 1850-2150°F, hold time at temperature 30-45 minutes
Temper: immediately after quench, 1000°F minimum temper recommended. Double tempering is required, two hours per temper.

GUIDELINES FOR HARDENING

PROCESSING

A11 PM can be worked as follows:

Machining (grinding, turning, milling)
Polishing
Plastic forming
Electrical discharge machining
Welding (special procedure including preheating and filler materials of base material composition).

GRINDING

During grinding, local heating of the surface, which may alter the temper, must be avoided. Grinding wheel manufacturers can furnish advice on the choice of grinding wheels.

SURFACE TREATMENT

The steel grade is a good substrate material for PVD and CVD coating. If nitriding is requested a small zone of 2- 15 μm is recommended. The steel grade can also be steam-tempered if so desired.

PROPERTIES

Modulus of Elasticity: 32psi x 106… (221 GPa)
Density: 0.286 lb/in3…(8005kg/M3)
Annealed Hardness…255-275 Brinell Hardness (BHn)
Machinability…35-40% of 1% Carbon Steel