Calculate heat-treatment costs from the drawing callout.
Heat treatment is priced from the callout on the drawing, not guessed from the material. ARCNM reads the treatment from the drawing. It covers all 38 kinds in the ISO 4885 vocabulary. Examples are through-hardening, case hardening, induction hardening, nitriding and quench-and-temper. Annealing and normalising are covered too. ARCNM extracts hardness and case depth per ISO 15787. It prices the step as a subcontract line, with the order minimum a heat-treater charges. Heavier parts cost more to treat. The minimum amortises over the batch. The lot-size curve shows where it stops dominating.
At a glance
- Inputs
- PDF drawing callout (kind, hardness, case depth per ISO 15787); part mass from the STEP model
- Machine classes
- priced as a subcontract line at your environment's heat-treatment rates, with the order minimum
- Standards applied
- ISO 4885 vocabulary (38 kinds) · ISO 15787 hardness and case depth · DIN 8580
- DfM checks
- hardness and case depth read from the drawing; machining after hardening priced as hard machining
- You get
- a subcontract line with its DIN 8580 code, placed in the routing after machining and before finishing and coating; the lot size at which the order minimum stops dominating
Which heat treatments are recognised and priced?
ARCNM recognises and prices all 38 ISO 4885 kinds. The hardening family: through, surface, case, induction, flame, laser and electron-beam hardening. Nitriding and nitrocarburising in their gas, plasma and salt-bath forms. Thermochemical diffusion treatments: carburising, carbonitriding and boriding. Quench-and-temper, austempering and martempering. The annealing family: normalising, soft annealing, spheroidising, stress-relief and bright annealing. Solution treatment and ageing, sub-zero treatment and hydrogen-embrittlement relief. Each kind carries its ISO and German designation. So the routing sheet names the step the way the standard does.
What drives the heat-treatment price?
The mass of the part comes first: heavier parts cost more to treat. Then the treatment kind and the order minimum. The minimum dominates a small batch and fades with the lot. Your own heat-treater's price list replaces ARCNM's rates per environment. The prices are effective-dated, so a repeated calculation is reproducible.
What the calculation gives you
- A subcontract line per treatment with rate, mass and order minimum visible.
- The treatment as an ordered step on the routing: after all machining, before surface finishing and coating. It can be exported with its DIN 8580 code.
- The lot-size break-even where the order minimum stops dominating the unit cost.
- The machining of the hardened part priced for the hardened material.
The treatment families and what they change
| Family (ISO 4885) | Examples | What changes | Follow-on step the routing expects |
|---|---|---|---|
| Through and surface hardening | quench-and-temper, induction, flame, laser | core or surface hardness, distortion | grinding of fits after hardening |
| Case hardening / diffusion | carburising, carbonitriding, boriding | hard case, tough core, case depth per drawing | grinding; threads usually masked |
| Nitriding | gas, plasma, salt-bath nitrocarburising | hard surface at low distortion | usually none — finish before nitriding |
| Annealing | normalising, soft, spheroidising, stress-relief | machinability, residual stress | none |
| Precipitation | solution treatment and ageing | strength of aluminium, stainless, nickel alloys | machining between solution and ageing |
Read on
Frequently asked questions
How much does heat treatment cost per part?
The part's mass at the rate for the treatment kind, plus the heat-treater's order minimum spread over the batch. ARCNM reads the treatment from the drawing. It shows the treatment cost and the minimum's share separately. So you see when a small batch of case-hardened parts is driven by the minimum.
Can I use my own heat-treater's prices?
Yes. Subcontract rates per treatment kind are environment settings, validated on entry and effective-dated. They apply to every calculation in that environment.