EN8 Steel Induction Hardening Punjab
Precision induction hardening for EN8 (080M40) medium carbon steel — shafts, axles, gears, spindles, and agri equipment. 52–58 HRC with certified Rockwell reports from Ludhiana.
52–58 HRC. Hard Surface. Tough Core.
Looking for dependable EN8 steel hardening job work? EN8 is India’s most widely used medium carbon steel — found in millions of tractor shafts, automotive axles, pump spindles, and gear blanks across Punjab’s manufacturing belt. Thakur Industries provides precision EN8 induction hardening for 080M40 components, achieving 52–58 HRC surface hardness with a 1–3 mm case depth while keeping the core tough and ductile. No furnace, no full-part heat — only the surface wears. Certified Rockwell hardness reports with every batch.
EN8 Applications
EN8 (also sold as C40 or 080M40 in Indian & British standards) responds excellently to induction hardening — the high-frequency coil heats only the surface layer in seconds, then polymer quench locks in hardness. We process EN8 shafts from 10 mm to 300 mm diameter and lengths up to 2,000 mm.
// SPECIFICATIONS //
EN8 Hardening Specifications
| Steel Grade | EN8 (080M40 / C40 — BS & IS equivalents) |
|---|---|
| Carbon Content | 0.36–0.44% C (medium carbon steel) |
| Surface Hardness | 52–58 HRC (induction hardened surface) |
| Case Depth | 1–3 mm typical (up to 5 mm to spec) |
| Suitable Components | Shafts, axles, gear blanks, spindles, couplings, agri pins |
| Component Range | Ø10–300 mm diameter, up to 2,000 mm length |
| Heating Temperature | 850–900 °C (high-frequency induction) |
| Quench Medium | Polymer / water-based, controlled |
| Turnaround | 2–4 working days (standard) |
| Testing | Certified Rockwell (HRC) reports, case-depth & dimensional check |
// HRC RANGE //
EN8 Induction Hardening HRC Range
The EN8 induction hardening HRC range is well defined by its medium carbon content. EN8 (080M40) achieves 52–58 HRC at the surface while the core stays soft and tough — the table below summarises the hardness, case depth, chemistry and austenitizing temperature you can specify on your drawing.
| Property | Value |
|---|---|
| Surface Hardness | 52–58 HRC |
| Core Hardness | 20–28 HRC (tough, ductile core) |
| Case Depth | 1–3 mm (up to 5 mm to spec) |
| Carbon Content | 0.36–0.44% C (medium carbon) |
| Austenitizing Temp | 850–900 °C |
// PRICING & TURNAROUND //
EN8 Hardening Rates & Lead Time
We offer competitive EN8 hardening rates for both prototype batches and bulk OEM production. Final pricing depends on component weight, diameter, case depth and quantity — share your 080M40 drawing for an exact quote within 24 hours.
Pricing Basis
Per kg or per piece, with reduced rates on bulk and repeat OEM orders.
Minimum Order
No rigid minimum — single trial shafts to 5,000+ piece monthly lots accepted.
Turnaround
Standard 2–4 working days; urgent same-week jobs for regular clients.
// WHY CHOOSE US //
Why OEMs Trust Thakur Industries
Consistent 52–58 HRC
Repeatable surface hardness on every EN8 batch.
Certified Reports
Rockwell test reports with every EN8 hardening job.
Years of Experience
Serving Punjab’s tractor & automotive component makers.
Fast Turnaround
2–4 day standard delivery keeps your line running.
Related Material Grades
EN8 Steel Induction Hardening FAQs
Learn more about the metallurgy of surface hardening from the ASM International heat-treatment resources.
Last updated: June 2026 · Thakur Industries, Ludhiana, Punjab
Ready to Harden Your Quality?
Contact us for a free consultation. Send your component details or drawings and get a quick quotation within 24 hours.