Tool Steel CNC Machining Services for Custom Tooling Parts
Factory-direct tool steel CNC machining for wear-resistant and high-hardness custom parts, including mold inserts, die components, punches, wear plates, locating blocks, fixture components, tooling plates and precision industrial components. Upload CAD files for material selection, DFM review, heat treatment planning, EDM review and inspection recommendations.
D2, A2, O1, H13, S7 & M2
Grade reviewed by wear, impact, heat and stability needs.
CNC, EDM & Wire EDM
Process selected by hardness, sharp profiles and tooling geometry.
Hardened Tooling Components
Mold inserts, punches, die details, wear plates and locating parts.
Heat Treatment Review
Hardness target, distortion and grinding allowance planned early.
Profiles, Datums & Inspection
Critical holes, surfaces, flatness and hardness checked by drawing.
When should I choose tool steel? | Choose tool steel when your part requires hardness, wear resistance, dimensional stability, impact resistance, heat resistance or longer service life in tooling, molds, dies, fixtures or high-wear applications. |
| Which tool steel grade should I choose? | D2 is often reviewed for high wear resistance. A2 offers good dimensional stability. O1 is common for oil-hardening tooling parts. H13 is used for hot-work applications. S7 is reviewed for impact resistance. M2 is used when high-speed steel properties are required. |
Can tool steel be machined before heat treatment? | Yes. Many tool steel parts are rough or finish machined in annealed condition before heat treatment. Final machining, EDM, grinding or polishing may be reviewed after heat treatment depending on tolerance and hardness requirements. |
Can hardened tool steel be machined? | Hardened tool steel features may require hard milling, EDM, Wire EDM, grinding or other post-treatment processes depending on hardness, geometry and tolerance. |
Can you support EDM or Wire EDM? | Yes. EDM and Wire EDM can be reviewed for hardened tool steel, sharp internal features, punch profiles, die openings, narrow slots and complex tooling geometry. |
| Can you inspect hardness and critical features? | Yes. Critical dimensions, holes, profiles, datum surfaces, flatness, thickness, thread features and hardness requirements can be inspected according to drawing requirements. |
Tool Steel Capability
Tool Steel CNC Machining Capability
Tool steel machining capability depends on material grade, annealed or hardened condition, part geometry, heat treatment plan, hardness target, wall thickness, datum strategy, tolerance, EDM requirements, grinding allowance and inspection method. Baosheng reviews CAD models and 2D drawings before machining to identify heat treatment distortion risk, wear surfaces, sharp internal features, burr-sensitive edges and final inspection requirements.
| Capability Area | Manufacturing Range | Best For |
|---|---|---|
| Tool Steel CNC Milling | Tooling plates, mold inserts, die blocks, wear plates, pockets, slots, datum surfaces and mounting holes. | Mold components, fixture tooling, die components, high-wear plates and industrial tooling parts. |
| Tool Steel CNC Turning | Tool steel pins, punches, sleeves, spacers, shafts, bushings and round wear components. | Punches, guide pins, tool holders, wear bushings and round tooling components. |
| Precision Tool Steel Machining | Critical holes, profiles, datum surfaces, flatness, thickness, slots, bores and controlled fits. | Mold inserts, die details, locating components, tooling blocks and precision assemblies. |
| EDM / Wire EDM Support | Hardened tool steel, sharp internal geometry, punch profiles, die openings, slots and complex contours. | Hardened tooling, die sets, punches, inserts and complex internal features. |
| Tool Steel Prototype Machining | Functional tooling prototypes for fit, wear review, heat treatment planning and assembly validation. | Tooling validation, pre-production trials and fixture development. |
| Heat Treatment & Inspection Support | Hardness review, heat treatment planning, distortion review, grinding, polishing and dimensional inspection. | High-hardness parts, wear-resistant components and final tool steel assemblies. |
Material Fit
When to Choose Tool Steel CNC Machining
Tool steel CNC machining is often selected when a part needs hardness, wear resistance, dimensional stability, impact resistance or heat resistance. It is commonly used for mold inserts, die components, punches, wear plates, fixture blocks, locating components, tooling plates, cutting-tool-style parts, forming tools and high-wear industrial components.
Cost-sensitive general mechanical parts may be better suited for carbon steel machining. Corrosion-critical parts may be better suited for stainless steel CNC machining. Lightweight structures may be better suited for aluminum CNC machining.
Choose tool steel when
Wear resistance, hardness, impact resistance, hot-work performance or tooling life is important.
Review carbon steel when
The part needs strength and cost efficiency but not high hardness or wear resistance.
Plan heat treatment early
Hardness target, distortion risk, grinding allowance and inspection method should be defined before quoting.
Use EDM / Wire EDM when
Hardened profiles, sharp internal geometry, punch contours or die openings cannot be produced efficiently by milling.
Grade Selection
Tool Steel Grade Selection for CNC Machined Parts
The best tool steel grade depends on wear resistance, impact resistance, heat resistance, hardness target, dimensional stability, heat treatment method, EDM requirements, grinding allowance and final application. D2 is often selected for wear resistance. A2 is reviewed when dimensional stability is important. H13 is used for hot-work conditions. S7 is reviewed for impact resistance.
| Tool Steel Grade | Typical Use | Notes |
|---|---|---|
| D2 Tool Steel | Wear plates, punches, dies, cutting edges, forming tools and high-wear components. | High carbon, high chromium tool steel with strong wear resistance. Heat treatment and grinding allowance should be reviewed. |
| A2 Tool Steel | Precision tooling, punches, dies, gauges and components requiring dimensional stability. | Air-hardening tool steel often selected when distortion control is important. |
| O1 Tool Steel | General tooling, gauges, small dies, punches and low-volume tooling components. | Oil-hardening tool steel with good machinability in annealed condition; heat treatment distortion should be reviewed. |
| H13 Tool Steel | Hot-work tooling, die-casting tooling components, mold inserts and high-temperature applications. | Good hot hardness and thermal fatigue resistance; often reviewed for hot-work environments. |
| S7 Tool Steel | Impact tools, punches, forming tools and shock-resistant tooling components. | Selected when impact resistance is more important than maximum wear resistance. |
| M2 High-Speed Steel | Cutting-tool-style components, wear parts and high-speed steel applications. | Higher hardness and wear resistance; machining and grinding strategy should be reviewed carefully. |
Process Selection
Tool Steel CNC Machining Processes
Tool steel projects require careful process planning because machining condition, hardness target, heat treatment sequence, EDM requirements and grinding allowance can affect cost, lead time and final accuracy. Baosheng selects CNC milling, turning, 5-axis machining, EDM, Wire EDM or combined processes based on geometry, material grade, hardness, tolerance and final inspection requirements.
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Tool Steel CNC Milling
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EDM Machining for Tool Steel Parts
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Wire EDM Tool Steel Profiles
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Precision Tool Steel Machining
Part Types
Custom Tool Steel CNC Parts We Manufacture
Baosheng supports tool steel components where hardness, wear resistance, EDM features, grinding allowance, datum accuracy, profile control and inspection stability matter.
- Tool steel mold inserts
- Tool steel die components
- D2 tool steel punches
- A2 tool steel tooling blocks
- O1 tool steel gauges
- H13 mold components
- S7 impact tooling parts
- M2 high-speed steel components
- Tool steel wear plates
- Tool steel guide pins
- Tool steel bushings
- Tool steel sleeves
- Tool steel spacers
- Tool steel fixture blocks
- Locating blocks
- Punch plates
- Die plates
- Tooling plates
- Forming tool components
- Hardened tool steel components
- Wire EDM tool steel profiles
- Low-volume tool steel production parts
- Replacement tooling components
Heat Treatment & Finishing
Heat Treatment, EDM, Grinding and Finishing for Tool Steel Parts
Tool steel finishing and heat treatment should be reviewed before machining because hardening, tempering, stress relief, EDM, Wire EDM, grinding, polishing and coating can affect final dimensions, hardness, flatness, surface finish and inspection requirements. For high-precision tooling parts, rough machining, heat treatment, semi-finishing, EDM or grinding sequence should be planned before production.
Heat treatment may cause dimensional change or distortion. If final tolerance, flatness, profile accuracy or surface finish is critical, grinding allowance, EDM allowance and post-heat-treatment inspection should be defined before quoting.
Annealed Tool Steel Machining
Rough or finish machining before heat treatment.
Heat Treatment
Reaching specified hardness, wear resistance or toughness.
Tempering
Adjusting hardness and toughness after hardening.
Stress Relief
Reducing distortion risk for selected tool steel components.
Hardened steel features, sharp internal geometry and deep details.
Precision profiles, punches, die openings and hardened contours.
Surface Grinding
Flatness, thickness control and improved surface finish.
Polishing / Black Oxide
Mold inserts, tooling surfaces or mild corrosion protection.
Not sure which tool steel grade or heat treatment route is best?
Upload CAD files and drawings. We will review wear resistance, hardness, distortion risk, EDM requirements, grinding allowance and inspection needs before quoting.
Tool Steel Part Quality
Hardness, Heat Treatment Distortion, Profiles and Tool Steel Part Inspection
Tool steel parts are often used in molds, dies, fixtures and wear applications, so final quality depends on more than CNC machining alone. Material grade, hardness target, heat treatment sequence, EDM requirements, grinding allowance, flatness, profile accuracy, datum surfaces and inspection method should be reviewed before production.
Grade Review
D2, A2, O1, H13, S7, M2 or specified tooling steel reviewed.
Hardness Target
Heat treatment method and hardness requirements identified.
Distortion Risk
Thin sections, geometry, datums and grinding allowance reviewed.
EDM Review
Sharp internal corners, slots, profiles and hardened features checked.
Machining
CNC, EDM, Wire EDM, hard milling or combined process selected.
Grinding / Finish
Flatness, thickness, polishing and coating requirements reviewed.
Inspection
Profiles, holes, flatness, datums, hardness and surface finish checked.
Packaging
Protect ground surfaces, sharp tooling edges and finished components.
Application Proof
Tool Steel CNC Machining Case Studies
The cases below focus on tool-steel-specific applications: hardness, wear resistance, heat treatment, EDM, Wire EDM, grinding allowance, mold inserts, punches, locating blocks and impact tooling components.
| Project | Material / Process | Challenge | Inspection / Result |
|---|---|---|---|
| D2 Tool Steel Punch Insert | D2 tool steel · CNC milling + heat treatment + Wire EDM profile review · 80 pcs | Punch insert required wear resistance, accurate profile geometry and controlled mounting holes after heat treatment. | Machining allowance, heat treatment distortion, Wire EDM profile requirements and inspection plan reviewed; profile dimensions, hole positions, thickness, datum surfaces and hardness checked. |
| H13 Tool Steel Mold Insert | H13 tool steel · CNC milling + EDM details + polishing review · 24 pcs | Mold insert required heat resistance, stable mating surfaces, EDM detail features and controlled surface finish. | Tool access, EDM areas, polishing allowance, datum surfaces and heat treatment sequence reviewed; mating surfaces, EDM details, flatness, surface condition and critical holes checked. |
| A2 Tool Steel Locating Block | A2 tool steel · CNC milling + heat treatment + surface grinding review · 150 pcs | Locating block required dimensional stability, precise dowel holes, flatness and wear-resistant locating faces. | Datum strategy, grinding allowance, heat treatment distortion and hole inspection reviewed; flatness, dowel hole positions, mating faces, thickness and hardness checked by first article and sampling. |
| S7 Tool Steel Impact Tool Component | S7 tool steel · CNC machining + heat treatment review + deburring · 60 pcs | Component required impact resistance, controlled edge condition and reliable fit in a tooling assembly. | Fillets, edge break, hardness target, heat treatment and final inspection strategy reviewed; critical dimensions, edge condition, mating surfaces and hardness checked. |
Scale-Up Path
From Tool Steel Prototype Machining to Repeat Tooling Parts
Many tool steel CNC projects begin with prototypes, replacement tooling or small pilot batches and later move into repeat tooling production. Baosheng helps review tool steel grade selection, machining condition, heat treatment, EDM requirements, grinding allowance, surface finish, inspection planning and packaging standards so validated tool steel parts can scale more smoothly.
Tool steel prototype machining
Validate fit, wear surfaces, heat treatment plan and tooling assembly before repeat production.
Low-volume tool steel manufacturing
Move replacement tooling and pilot tooling parts into controlled small-batch production.
EDM machining for hardened tool steel
Support sharp internal features, deep details and hardened mold or die geometry.
Wire EDM tool steel components
Review punch profiles, die openings, narrow slots and high-accuracy contours.
Industries
Tool Steel CNC Machining for Engineering Applications
Mold & Die Manufacturing
Mold inserts, die blocks, punches, die plates, forming tools and EDM details.
Stamping & Forming
Punches, wear plates, die components, guide blocks and tooling inserts.
Industrial Equipment
Industrial tool steel machined parts, wear components, tooling blocks, locating blocks and hardened guides.
DFM Guidance
Design Tips for Tool Steel CNC Machined Parts
Good tool steel design balances grade selection, hardness target, wear surfaces, heat treatment sequence, EDM requirements, grinding allowance and final inspection planning.
- Use D2 for wear resistance, A2 for dimensional stability, H13 for hot-work applications and S7 for impact resistance.
- Use carbon steel when high hardness or wear resistance is not required.
- Define hardness target, heat treatment method and inspection requirement clearly.
- Review thin sections, long parts, asymmetric geometry and tight flatness before heat treatment.
- Add grinding allowance when final flatness, thickness or surface finish must be controlled after hardening.
- Use EDM or Wire EDM for hardened steel, sharp internal profiles, narrow slots and punch or die contours.
- Avoid unrealistically sharp internal corners unless EDM or Wire EDM is planned.
- Mark dowel holes, press-fit holes and alignment features clearly on the drawing.
- Define whether threads are machined before or after heat treatment.
For broader pricing factors, review CNC machining cost.
Your questions answered
Tool Steel CNC Machining FAQs
Is tool steel good for CNC machining?
Yes. Tool steel can be CNC machined in annealed condition and may require EDM, Wire EDM, grinding or hard machining after heat treatment depending on hardness, geometry and tolerance requirements.
What tool steel grades can be CNC machined?
Common CNC machined tool steel grades include D2, A2, O1, H13, S7, M2 and other tooling materials depending on wear resistance, toughness, heat resistance and drawing requirements.
What is D2 tool steel used for?
D2 tool steel is commonly used for wear-resistant punches, dies, wear plates, cutting edges and tooling components where high wear resistance is required.
What is H13 tool steel used for?
H13 tool steel is commonly used for hot-work tooling, mold inserts, die-casting-related components and parts exposed to heat and thermal cycling.
Can tool steel be machined after heat treatment?
Yes, but hardened tool steel may require hard milling, EDM, Wire EDM, grinding or polishing depending on hardness, feature geometry and final tolerance requirements.
Can you machine hardened D2 tool steel?
Hardened D2 features can be reviewed for EDM, Wire EDM, grinding or hard machining depending on hardness, geometry, tolerance and surface finish requirements.
Can tool steel parts be Wire EDM cut?
Yes. Wire EDM is commonly reviewed for tool steel punch profiles, die openings, narrow slots, hardened contours and high-accuracy tooling features.
Do tool steel parts need grinding after heat treatment?
Some tool steel parts require grinding after heat treatment when final flatness, thickness, surface finish or tight tolerance must be controlled. Grinding allowance should be planned before machining.
What files do you need for a tool steel CNC machining quote?
We recommend 3D CAD files and 2D drawings with tool steel grade, quantity, tolerances, hardness target, heat treatment, EDM notes, grinding allowance, surface finish and inspection requirements.
Can you sign an NDA before reviewing tool steel part drawings?
Yes. NDA can be arranged before reviewing confidential CAD files, drawings or tooling information.
Get a Quote for Tool Steel CNC Machined Parts
Upload CAD files and drawings with tool steel grade, quantity, tolerance, hardness target, heat treatment, EDM requirements, grinding allowance, surface finish and inspection requirements. Our engineers will review material selection, machinability, heat treatment distortion, EDM strategy, finishing impact and inspection requirements before quoting.
- NDA available before tooling file review
- D2 / A2 / O1 / H13 / S7 / M2 material review
- Heat treatment, distortion and hardness review
- EDM, Wire EDM, grinding allowance and profile review
- Prototype to replacement tooling and repeat production support
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