What heat treating costs in Canada, and why there is a minimum
Heat treating is priced by weight and furnace load with a minimum lot charge. The process cost ladder, real figures, and how to quote it in Canada.
Quick answer (CAD, as of November 2026): Heat treating is priced by weight and by furnace load, with a minimum lot charge, so a few parts cost about the same as filling the furnace. The process sets the ladder: stress relief, annealing and normalizing are cheapest, through-hardening and tempering sit in the middle, case hardening, carburizing and nitriding cost more on long cycles, and vacuum and specialty work costs the most. No Canadian shop publishes a rate card; they quote the job. For scale, a US machine shop benchmarks heat treating at about $2 to $5 USD per pound plus a $175 to $300 lot fee. Batch parts into bigger lots to beat the minimum.
How heat treating is priced
A heat treat run is a furnace cycle: the shop loads a batch, runs the cycle, and the energy and time are much the same whether the load is full or nearly empty. So shops price one of three ways, and all of them carry a minimum. By the piece, for traceable lots. By the pound, for bulk and fasteners. Or by the cycle, for the furnace's full run time. A US heat treater, Paulo, lays this out and notes plainly that all heat treaters have minimums and everyone prices a little differently. The lesson for a buyer: compare total cost, not the unit, and fill the lot.
What drives the number
| Driver | Cheaper | More expensive |
|---|---|---|
| Process | Stress relief, anneal, normalize | Carburize, nitride, vacuum |
| Lot size | A full furnace load | One or two pieces (pay the minimum) |
| Material | Plain carbon steel | High alloy, tool and specialty steels |
| Spec and cert | Commercial | AMS2750 pyrometry, Nadcap, aerospace |
| Cycle length | Short | Long soak and multi-step cycles |
The process cost ladder
Not all heat treating costs the same, because the cycles differ in length and complexity. Stress relief, annealing and normalizing are short and cheapest. Through-hardening plus tempering sits in the middle. Case hardening, carburizing and nitriding cost more because the cycles run long (nitriding in particular can run many hours). Vacuum and specialty processes cost the most: furnace-industry figures put a plain gas-atmosphere load around $10 USD while a single-chamber vacuum load with high-pressure gas quench runs toward $50, several times more, because the equipment and energy per load are higher. Spec the process the part needs, not the most capable one on the shelf.
Why a few parts cost almost as much as a full lot
Because the furnace runs the same cycle either way. Published US price lists make it concrete: small runs are priced as a flat lot rate with a handling fee on every order, rather than per piece, so one or two parts pay the floor. A machine shop benchmarks that floor as a lot fee of roughly $175 to $300 USD on top of the per-pound rate. The way to beat it is lot size: batch your parts, and if you order steadily, ask about per-pound or per-piece pricing that spreads the furnace cost.
Spec and certification add cost
A higher-alloy base metal costs more to treat, and a tighter spec adds process control. Aerospace and defence work under AMS2750 pyrometry or a Nadcap or AS9100 approval carries a real premium, because the shop maintains calibrated furnace surveys, traceability and documentation that a commercial job does not. Canada's large heat treaters, the aerospace-grade shops around Ontario, hold those approvals; if your part does not need them, a commercial shop is cheaper.
Buying across the border
Most heat treating is local, because shipping heavy steel to be cooked and shipped back rarely pays. The published numbers above are US and in USD; a Canadian shop quotes in CAD, and for most work a domestic heat treater is the practical choice once freight and lead time are counted. Where a part travels for a specialty process, count the landed cost; the border math is in reshoring to Canada.
How to pay less
Batch into bigger lots so the minimum is spread. Ask whether a cheaper process or a material substitution meets the requirement. Drop certifications the part does not need. Keep cycles short where the spec allows. And group heat treating with the shop's other runs of the same cycle where you can.
What to send for a quote
The material and its grade, the part weight and quantity, the hardness or spec you need (for example a Rockwell target, or a case depth), and any certification requirement. Send it once and request quotes from Canadian heat treaters.
FAQ
How is heat treating priced?
Three ways, all with a minimum: by the piece (traceable lots), by the pound (bulk), or by the furnace cycle. A heat treat run is a furnace load, so the shop charges a floor regardless of how few parts you send.
How much does heat treating cost per pound?
A US machine shop benchmarks about $2 to $5 USD per pound plus a $175 to $300 lot fee. No Canadian shop publishes a CAD rate, so treat the US number as a shape and get a Canadian quote.
Is there a minimum charge?
Yes, essentially always. A furnace cycle costs about the same full or empty, so small lots pay a lot or handling fee (a US benchmark is $175 to $300). Batch parts to spread it.
Which costs more, hardening, annealing or case hardening?
Annealing, normalizing and stress relief are cheapest (short cycles). Through-hardening and tempering sit in the middle. Carburizing and nitriding cost more because the cycles run long. Vacuum and specialty work costs the most.
How much does vacuum heat treating cost?
It is the costliest tier. Furnace-industry figures put a single-chamber vacuum load with high-pressure gas quench toward $50 USD against roughly $10 for a gas-atmosphere load, because the equipment and energy per load are higher.
How do I reduce heat-treating cost?
Think in lot size, not total volume: a full furnace load is efficient. Ask about material substitutions, drop unneeded certifications, keep cycles short, and consider per-pound pricing for steady volume.
Last reviewed: November 2026. No Canadian heat treater publishes a rate card, so this guide teaches the pricing mechanic and labels its figures: the per-pound and lot-fee benchmarks are a US machine shop's in USD, and the vacuum per-load figures are furnace-industry data, also USD. Canadian shops quote the job. Related reading: what CNC machining costs.
Need this part made?
Describe your part once and we'll match you to vetted Canadian shops that can actually make it, then bring back 3 to 5 quotes. Free for buyers, no account needed.