P20 Tool Steel

Tools Steel supplier
Tools Steel Products
Mixed Tools Steel

P20 tool steel stands as a reliable workhorse in the mold and die-making industry. This low-alloy, molybdenum-vanadium steel offers a well-balanced combination of properties that make it suitable for a wide range of cold work applications. Its strengths lie in its excellent machinability, good wear resistance, and dimensional stability, making it a cost-effective and practical choice for tool and die makers.

Chemical Composition

The chemical composition of P20 tool steels is outlined in the following table..

Element Content (%)
C 0.28-0.40
Mn 0.60-1.00
Si 0.20-0.80
Cr 1.40-2.00
Mo 0.30-0.55
Cu 0.25
P 0.03
S 0.03

Physical Properties

The following table shows the physical properties of P20 tool steels.

Properties Metric Imperial
Density 7.85 g/cc 0.284 lb/in3


P20 tool steel boasts several key properties that make it a popular choice for cold work applications. Its low carbon content contributes to excellent machinability, allowing for efficient shaping and finishing with minimal equipment. This characteristic, combined with good weldability, makes it a practical and cost-effective option for tool and die makers. P20 also exhibits good wear resistance and dimensional stability, ensuring that tools maintain their shape and functionality over time. Additionally, its pre-hardened state (typically around 29-33 HRC) eliminates the need for complex heat treatment processes, further simplifying its use.

Mechanical Properties

The mechanical properties of P20 tool steels are displayed in the following table.

Properties Metric Imperial
Hardness, Brinell (typical) 300 33
Hardness, Rockwell C (typical) 30 30
Tensile strength, ultimate 965-1030 MPa 140000-150000 psi
Tensile strength, yield 827-862 MPa 120000-125000 psi
Elongation at break (in 50 mm (2")) 20.0% 20.0%
Compressive strength 862 MPa 125000 psi
Charpy impact (V-Notch) 27.1-33.9 J 20.0-25.0 ft-lb
Poisson's ratio 0.27-0.30 0.27-0.30
Elastic modulus 190-210 GPa 27557-30457 ksi

Thermal Properties

The thermal properties of P20 tool steels are given in the following table.

Properties Conditions
T (°C) Treatment
Thermal expansion 12.8 x 10-6/ºC 20-425 -


P20 tool steel's combination of affordability, machinability, and well-rounded performance makes it a go-to option for a multitude of cold work applications. Its ease of use and reliable properties solidify its position as a trusted workhorse in the tool and die-making industry.