What does bad die cleaning cost an aluminum extrusion plant?

On a $50M turnover plant, a conservative 1% deviation below best-practice cleaning costs between $450,000 and $500,000 a year — a burn rate of about $41,500 a month. The breakdown: $325,000 from a 1% increase in scrap rate on $32.5M of material, $60,000 from unplanned die changes on $6M of labour, $25,000 from maintenance and disposal on $2.5M of operating costs, and $80,000 from tooling decay driven by a 20% reduction in die life. All figures are field-collected averages.

How much does a 1% cleaning deviation shorten extrusion die life?

A 1% deviation below best-practice cleaning shortens die lifetime by about 20%. On a plant holding $2.5M of H13 die inventory, that means an asset depreciating substantially faster than planned. The mechanism is nitriding: the treatment that hardens the die surface depends entirely on the surface condition it finds, so residues, contamination or uncontrolled abrasion left by the cleaning step compromise the result.

How are capital assets distributed in a $50M extrusion plant?

About $25M of fixed assets, distributed as: extrusion lines and auxiliaries $12M (48%), building and infrastructure $5M (20%), handling and logistics $4M (16%), H13 die inventory $2.5M (10%), die shop and tooling $1.5M (6%). Within that, the die cleaning equipment is roughly $400,000 — 1.6% of the total fixed assets, and the piece that conditions how the rest performs.

Why does die cleaning condition the whole die shop?

There are three assets inside a die shop and cleaning sits underneath the other two. The die repair team cannot work miracles if the surface is not prepared correctly. The nitriding equipment, around $800,000, produces a result that depends on how the surface arrived. And the cleaning equipment itself, at $400,000, is the smallest of the three. Like the smallest gear inside a precision stopwatch: if it fails, precision is gone.

What two numbers can a die shop manager check today?

Media consumption: one hour of blasting should stay under 1 kg, or 2 lbs, per blast wheel. Track media purchases over four weeks, check the machine hour counter, divide. Above that threshold the process has drifted. And the 5-10 rule: a process not reviewed in five years needs a review, a machine older than ten years needs a full analysis of both process and equipment. Both checks can be done in-house without anyone from outside.

What is the profit and loss structure of a $50M extrusion plant?

Field-collected averages: total revenue $50M, raw material including LME and premiums 65% ($32.5M), direct and indirect labour 12% ($6M), EBITDA 3% ($1.5M). The margin is thin, which is why a loss of $450,000 to $500,000 a year from die cleaning deviation is not a rounding error — it is around a third of the operating margin.

What a 1% Die Cleaning Deviation Costs a $50M Extrusion Plant.

Silvio Ruiu

Dec 30, 2025

2 min read

Updated: Aug 16

Aluminum extrusion die cleaning numbers, in short.

(All numbers are field-collected and averages.)

The Executive Summary:

A $50M-turnover plant is built on $25M of assets, with an average EBITDA of $1.5M (3%).
1.6% asset responsibility: your $400k die cleaning system conditions $25M in total fixed assets — like the smallest gear inside a high-precision stopwatch: if it fails, precision is gone.
A 1% deviation below best-practice cleaning shortens die lifetime by 20%, worth about $2.5M of the plant's assets.
$450k to $500k per year is the profit that disappears with a 1% cleaning deviation.

The Burn Rate: $41.5k Monthly | $125k Per Quarter.

The math is below if you're interested; otherwise, jump to the Technical Solution.

What a 1% die cleaning deviation does to the P&L of an extrusion plant.

"The devil is in the details." A conservative 1% inefficiency in die preparation triggers a chain reaction:

Financial Item	Annual Value ($)	Impact of Process Inertia	Estimated Annual Loss ($)
Material Cost (LME)	$32,500,000	Scrap Rate: 1% increase	$325,000
Manufacturing Labor	$6,000,000	Unplanned Die Changes: 1%	$60,000
Operating Costs	$2,500,000	Maintenance & Disposal: 1%	$25,000
Asset Depreciation	$3,500,000	Tooling Decay: 20% lifespan reduction	$80,000
TOTAL ESTIMATED LOSS		Superprudential 1% deviation	$490,000

Capital assets: where the die shop actually sits.

Weight of the Die Shop:

Asset Category	Value ($)	% of Total
Extrusion Lines & Auxiliaries	$12,000,000	48%
Building & Infrastructure	$5,000,000	20%
Handling & Logistic Systems	$4,000,000	16%
Die Inventory (H13 Steel)	$2,500,000	10%
Die Shop & Tooling	$1,500,000	6%

Profit and loss structure: where the 3% EBITDA comes from.

Financial Item	% Weight	Annual Value ($)
Total Revenue	100%	$50,000,000
Raw Material (LME + Premiums)	65%	$32,500,000
Direct & Indirect Labor	12%	$6,000,000
EBITDA (Operating Margin)	3%	$1,500,000

The smallest gear: why die cleaning conditions the whole die shop.

Inside the Die Shop, there are 3 assets. The Die Cleaning equipment ($400,000 only) is finally responsible for the deviation:

The Die Repair Team: can't work miracles if the surface isn't prepared correctly.
The Die Nitriding Equipment ($800,000): its quality is deeply influenced by cleaning.
The Die Cleaning Equipment: conditions the success of the entire shop and prevents the $490k profit erosion.

Two numbers a die shop manager can check today.

Media consumption: one hour of blasting must stay under 1 kg (2 lbs) of media. Blast media consumption rule.
The "5-10" rule: a 5-year-old process needs a process review; a 10-year-old machine needs a full tech analysis. Predictive approach to blasting station optimization.

The older the equipment, the higher the ROI of fine-tuning it. Fifteen minutes on your current setup: what you run today, and where we would start looking.

Extrusion die maintenance: the next steps.

Previous steps:

Step A - Analysis intro and Dies as assets way of thinking.

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