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Automotive · AS9100D certified for aerospace · Peenya, Bengaluru

Heat treatment you can read back.

Sealed-quench carburising, carbonitriding and through hardening for gears, shafts and pins. Every charge runs on a logged cycle, and every lot leaves with its test report.

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Sealed quench furnaces
SQF-1, 2, 3 · integral oil quench
Load per charge
400 kg
Tempering furnaces
TFC-1, 2, 3
CHT Carburising · hardening · tempering
  • Pre-heat430 ± 10 °C · 60 min min.
  • Carburise900 ± 15 °C
  • BoostCP 0.98 %
  • DiffuseCP 0.63 %
  • Harden825 ± 15 °C
  • Quenchoil 110 ± 10 °C
  • Temper170–190 °C · 90 min

STEP typical parameters from process inspection records. Times illustrative; actual cycle per part specification.

Certification

AS 9100D

System
Aerospace quality management
Includes
ISO 9001:2015
Status
Certified
Certification
  • Pyrometry AMS 2750 Thermocouples calibrated to the aerospace pyrometry standard
  • Release 12 checks Run on every lot before its test report is signed
  • Quench to temper ≤ 4 h Logged per charge; a missed window holds the lot
  • Industries Automotive and general engineering; AS9100D certified for aerospace
Rows of splined gear shafts standing upright in a fixture on the STEP shop floor.
Gear shafts jigged for a charge · STEP works, Peenya

On the record

The record so far.

Years since incorporation, 2010
16
Customers
80+
Part numbers with an approved process recipe
450+

Processes

Seven processes, named the way the shop floor names them.

Every job on the floor carries one of these codes, from the jigging instruction to the test report.

All processes and the shared route

Quality and plant

Hardened under control. Released on the record.

  • Sealed quench furnaces: parts are hardened and oil quenched without leaving the atmosphere, then tempered in TFC-1, 2 or 3.
  • Carbon potential held by oxygen probe, not by recipe alone.
  • PFMEA and control plan per part, with jigging work instructions.
  • Test report with microhardness case-depth traverse, HR15N surface hardness and microstructure.
The 12 release checks and the test report Furnaces and equipment

Customer portal

Where is my lot? Log in instead of calling.

Lot status, signed test reports and delivery challans for your company. STEP approves each account.

Lot 0417 · 1,200 pcs · CHT Illustrative
  1. ReceivedMon 09:10
  2. ScheduledMon 11:40
  3. HardeningTue 06:05
  4. TemperingTue 14:30
  5. Inspection—
  6. Ready—
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Quote from the drawing.

Material grade, hardness and case depth are enough to start. We reply with the cycle we propose and a price.

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Micro Vickers hardness tester in the STEP lab.
Micro Vickers · case-depth traverse