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CNC Machining
Tool Steel H13 is the most widely used tool steel for hot- and cold-work tooling, thanks to its combination of high toughness and fatigue resistance. We supply Tool Steel H13 CNC parts across the UK, from single prototypes to production runs.
Its chromium content helps it resist softening at high temperatures, making it ideal for die-casting, forging and extrusion tooling. As a result it is often specified for punches, dies & chuck jaws, plastic injection tooling and industrial knives & hammers. Its quoted tensile strength of around 1590 MPa gives a useful guide when sizing parts.
Parts are CNC milled or turned and can be hardened and tempered after machining. Send us a STEP file and we will quote your Tool Steel H13 CNC parts promptly, with UK-wide delivery. Finish options (as machined or ground) can be confirmed when you order.
Material
Tool Steel H13
Description
Strengths
Lead time 10 business days. Hot-work tool steel combining toughness, fatigue resistance and red hardness.
Weaknesses
Poor weldability
Silver grey
Ultimate tensile strength
1590 MPa
Yield strength
1380 MPa
Modulus of elasticity
215 GPa
Elongation at break
9%
Density
7.8 g/cm³
Hardness
30–54 HRC
Shear modulus
Not specified
Corrosion resistance
Low
UK equivalent
Maximum service temperature
Not specified
Thermal expansion coefficient
10.4–12.4 × 10⁻⁶ /°C
Thermal conductivity
22–29 W/(m·°C)
Electrical resistivity
Not specified
Heat treatment
Hardening & tempering
Recommended finish
As machined or ground
Punches, dies & chuck jaws
Plastic injection tooling
Industrial knives & hammers
Dowel pins & gauges
Values shown are typical supplier figures for Tool Steel H13 and may vary with stock condition. Please confirm critical properties before production.
Tool Steel H13 is machined in the annealed condition, then hardened. It machines well when annealed and is a hot-work steel with good toughness and red hardness.
Heat treatment after machining can cause slight size change, so critical features may be finished by grinding after hardening. Achievable tolerances depend on part size, geometry and features, so mark any critical tolerances on a 2D drawing with your upload and they will be reviewed and confirmed in your quote.
Tool Steel H13 is normally finished by hardening and tempering. Parts can be supplied as machined or ground. Please state the hardness you need on your drawing.
Typical uses include punches, dies and chuck jaws, plastic injection tooling, industrial knives and wear parts, and dowel pins and gauges.
H13 keeps its hardness at elevated temperatures, which makes it the usual choice for hot-work tooling and plastic injection moulds. For cold-work tooling, D2 or A2 is usually more suitable.
The typical lead time shown for Tool Steel H13 is 10 business days from an approved order. Heat treatment can add time. Quantity, finishing and any heat treatment can affect this, and your quote confirms the date before you order.
Parts in as fast as 10 business days
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