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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryIndustryMetal IndustrySinsHärterei Niggli AG
Härterei Niggli AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Härterei Niggli AG is a company specialised in heat treatment of metal components. Services include case hardening (carburizing), carbonitriding, gas nitriding, vacuum hardening, annealing, induction hardening, parts cleaning, shot‑blasting and crack testing, serving sectors such as automotive, mechanical engineering, aerospace and toolmaking.

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Products & services

Industry:Metal Industry
✓ Offered10
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4.1/5

Härterei Niggli AG

Heat treatment
Heat treatment of steel, cast and sintered materials including case hardening, carbonitriding, hardening/tempering, gas nitriding, gas nitrocarburizing, as well as vacuum hardening and deep-freezing.
Case hardening
Case hardening of components for surface hardening, including partial treatments depending on feasibility; for unalloyed, low-alloy and deep-drawing steels.
Vacuum hardening / deep-freezing
Vacuum hardening with subsequent deep-freezing and tempering to achieve the required operating hardness; without surface corrosion and with a low retained-austenite content.
Gas nitriding
Gas nitriding of steel, cast and sintered materials to increase surface hardness, with low distortion, good polishing capability and minimal change in dimensions.
Gas nitrocarburizing
Gas nitrocarburizing for surface hardening with improved corrosion and wear resistance, increased fatigue strength and low change in dimensions.
Heat treatment under nitrogen / normalizing
Annealing of semi-finished products and workpieces to achieve defined material properties; reduces workpiece stresses and can improve machinability.
Annealing under hydrogen
Annealing in a hydrogen atmosphere to reduce carbon at the component surface and to improve magnetic coercive field strength.
Blasting technology
Glass bead, corundum and ceramic blasting for surface preparation, cleaning, rust removal, surface finishing and surface strengthening blasting.
Crack testing
Crack testing of components as a testing and inspection service in the context of heat treatment.
Component cleaning
Component cleaning as an additional service alongside heat treatment and surface processes.
Trust & reputation

ranQ Trust Score of Härterei Niggli AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Härterei Niggli AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
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CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Härterei Niggli AG scores 82.0 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.83.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.70.07%
Härterei Niggli AG scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).83.322%
Härterei Niggli AG scores 17.1 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.17.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Härterei Niggli AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Industrie Nord 11
5643 Sins

At a glance

Legal form
Corporation
UID
CHE-498.076.626
Founded
2017 · 9 years
Last commercial register change
August 7, 2026
Employees
11 to 20
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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