Purohit Steel is a leading Grade 1.2085 Stockist and Exporter in India, supplying premium pre-hardened X33CrS16 corrosion-resistant mould steel with verified chemical composition, mechanical properties and full traceability for mould makers, OEMs and tooling houses working with humid, water-cooled or chemically aggressive moulding environments.
As an ISO-certified company established in 1965, we maintain ready stock of Grade 1.2085 in round bar, flat bar and block form, with in-house bandsaw cutting, machining, grinding and EDM support for fast turnaround across India and export markets.
Table of Contents
- 1. What is Grade 1.2085 Steel
- 2. Why Purohit Steel for 1.2085
- 3. Comparison: 1.2085 vs VR Stainless vs 1.2083 ESR
- 4. Chemical Composition
- 5. Mechanical Properties
- 6. Physical & Thermal Properties
- 7. Equivalent International Grades
- 8. Heat Treatment Guidelines
- 9. Available Forms & Sizes
- 10. Machining & Selection Notes
- 11. Applications & Uses
- 12. Industries We Serve
- 13. Related Products
- 14. Authorized Stockist Brands
- 15. Cities We Supply in India
- 16. Our Services
- 17. Frequently Asked Questions
- 18. About Purohit Steel
- Our Certifications
- Countries We Export Worldwide
- Export Packaging & Shipping
- Quality Inspection & Testing
- Latest Price List
- MOQ & Payment Terms
- People Also Search For
What is Grade 1.2085 Steel?
Grade 1.2085 (Werkstoffnummer 1.2085, chemical designation X33CrS16) is a pre-hardened, corrosion-resistant martensitic mould steel manufactured to DIN 17350. With approximately 15-17% chromium and added sulphur for machinability, it sits between conventional Cr-Mn-Mo mould steels (like 1.2311 / 1.2738) and fully stainless, ESR-refined grades (like 1.2083 ESR) in the corrosion-resistance spectrum.
The grade is supplied in a quenched-and-tempered (pre-hardened) condition of approximately 280-325 HB (29-33HRC), which removes the need for further heat treatment before machining. The added sulphur content improves chip-breaking and machinability compared to many fully stainless tool steels, while the high chromium content provides meaningful protection against rust, moisture and many corrosive plastics.
1.2085 offers a practical balance of corrosion resistance, machinability and dimensional stability, making it a popular mid-tier choice for moulds exposed to humid or water-cooled environments where full ESR-grade polishability is not essential.
Note: 1.2085 is one of several corrosion-resistant grades Purohit Steel stocks — see the comparison table below for how it compares with VR Stainless and 1.2083 ESR.
Why Purohit Steel for Grade 1.2085
- Ready Stock: Round bar, flat bar and block sizes held in inventory for immediate dispatch
- ISO-Certified Quality: Documented quality management since 1965
- Authorized Stockist: Sourced through globally reputed manufacturers, including NLMK Verona and SeAH CSS
- Value-Added Machining: In-house bandsaw cutting, precision machining, grinding, drilling, gun drilling, EDM and wire-cut
- Technical Support: Assistance with grade selection, heat treatment guidance and equivalence mapping
- Pan-India & Export Supply: Warehousing in Vasai with a sales outlet in Mumbai, serving customers across India and international markets
- Export-Ready Packaging: Palletised, moisture-protected packing suitable for both domestic transport and export shipment
Comparison: 1.2085 vs VR Stainless vs 1.2083 ESR
Purohit Steel stocks more than one corrosion-resistant mould steel grade. The table below compares 1.2085 against two related grades to help select the right material for the application.
| Factor | 1.2085 (X33CrS16) | VR Stainless | 1.2083 ESR |
|---|---|---|---|
| Chromium content | ~15-17% | ~13-16% | ~12.5-13.5% |
| Supply hardness | 280-325 HB | 30-34 HRC | 290-330 HB |
| Refinement | Standard melt | Standard melt, advanced processing | ESR (Electro-Slag Remelted) — ultra-clean, homogeneous |
| Corrosion resistance | Good | Good to very good | Very good |
| Polishability | Moderate | Good | Superior, mirror/optical-grade |
| Best suited for | Humid/water-cooled moulds, general corrosive-plastic tooling | Heavy water-cooling channels, continuous production | High-gloss, transparent, medical/optical moulds |
Grade 1.2085 Chemical Composition
Composition as per DIN 17350 (typical mill range, weight %):
| Element | Symbol | Composition (%) |
|---|---|---|
| Carbon | C | 0.28 - 0.38 |
| Silicon | Si | 1.00 max |
| Manganese | Mn | 1.40 max |
| Chromium | Cr | 15.00 - 17.00 |
| Sulphur | S | 0.05 - 0.10 |
| Phosphorus | P | 0.030 max |
| Iron | Fe | Balance |
Note the intentional sulphur addition (0.05-0.10%) — unlike most stainless tool steels, this is added deliberately to improve chip formation and machinability, at a modest trade-off in polishability.
Mechanical Properties of Grade 1.2085
Typical values in the as-supplied, pre-hardened (quenched & tempered) condition:
| Property | Typical Value |
|---|---|
| Hardness (supply condition) | 280 - 325 HB (approx. 28 - 33 HRC) |
| Tensile Strength (Rm) | 950 - 1080 MPa |
| Yield Strength (Rp0.2) | 700 - 820 MPa |
| Elongation at Break (A5) | 10 - 14% |
| Impact Toughness (Charpy V, longitudinal) | 15 - 20 J |
| Modulus of Elasticity (E) | ~200 GPa |
| Weldability | Limited (air-hardening grade) |
Values are typical for material supplied in the standard pre-hardened condition and can vary with section size and mill batch. Mill test certificates (EN 10204 2.2 / 3.1) are available on request.
Physical & Thermal Properties
| Property | Value |
|---|---|
| Density | ~7.70 g/cm³ |
| Thermal Conductivity (room temp.) | ~21 - 24.5 W/(m·K) |
| Coefficient of Thermal Expansion (20-200°C) | 10.5 - 13.2 × 10-6 /K |
| Specific Heat Capacity | ~460 J/(kg·K) |
| Electrical Resistivity (room temp.) | ~0.60 µΩ·m |
Thermal conductivity is noticeably lower than base P20 grades (1.2311/1.2738) due to the high chromium content — this should be factored into cooling-channel design for moulds using 1.2085.
Equivalent International Grades
| Country / Standard | Designation |
|---|---|
| Germany (Werkstoffnummer, DIN 17350) | 1.2085 / X33CrS16 |
| USA (Common trade designation) | AISI 420FM / 420F Modified |
| USA (UNS, approx.) | S42020 |
| France (AFNOR, approx.) | Z33CS16 |
1.2085 is related to, but distinct from, VR Stainless and 1.2083 ESR — refer to the comparison table above before substituting grades.
Heat Treatment Guidelines
| Process | Guideline |
|---|---|
| Supply condition | Quenched & tempered (pre-hardened) 280-325 HB — ready to machine, no further heat treatment normally required |
| Stress relieving (after heavy machining) | 590-650°C, hold approx. 2 min per mm of section thickness, furnace or air cool |
| Softening / annealing (if re-machining softer stock is required) | Heat to 850-880°C, hold approx. 2 min per mm, cool slowly in furnace or air |
| Hardening (if higher hardness is required) | Austenitize at 1000-1050°C, hold approx. 1 min per mm, quench in still air or polymer — this is an air-hardening grade, avoid water/oil quench to reduce cracking risk |
| Tempering | 550-610°C, hold approx. 3 min per mm, air cool |
Available Forms & Sizes
- Round Bars
- Flat Bars / Plates
- Blocks
- Custom sizes cut to drawing via in-house bandsaw cutting
Material is machined, ground, drilled and finished in-house through our precision machining, grinding, drilling, gun drilling, EDM and wire-cut facilities, so blocks can be supplied close to finished dimensions.
Machining & Selection Notes
- Cutting tools: The sulphur addition improves chip control versus many stainless tool steels, but 1.2085 still machines slower than base P20 grades; coated carbide tooling with adequate coolant is recommended.
- Cavity work: Rough and semi-finish deep cavities before final finishing passes to reduce distortion from residual stress release.
- Welding / repair: Weldability is limited because 1.2085 is air-hardening; where weld repair is unavoidable, preheat and stress-relieve after welding to reduce cracking risk.
- Polishing: Achieves a reasonable production-grade polish, but for optical or high-gloss finish requirements, 1.2083 ESR is generally the better choice — see the comparison table above.
- Grade selection: Choose 1.2085 for moulds needing solid corrosion resistance with good machinability at moderate cost; step up to VR Stainless or 1.2083 ESR where higher polishability or maximum corrosion resistance is required.
Applications of Grade 1.2085 Steel
1.2085 steel is widely used across plastic mould manufacturing wherever moisture, cooling water or corrosive plastics would otherwise attack conventional mould steel. Its balance of corrosion resistance and machinability makes it a practical everyday choice for humid-environment tooling.
- Injection moulds for corrosive or chemically aggressive plastics (PVC, flame-retardant compounds)
- Moulds used in humid or coastal-climate environments
- Water-cooled mould systems and cooling-channel inserts
- Medical and hygiene product moulds
- Packaging and food-contact component moulds
- Blow moulding tools
- Water-contact machine components
Grade 1.2085 for Corrosion-Prone Tooling
In mould making, 1.2085 is preferred where standard P20-family steel would corrode from moisture or cooling water contact, but where full ESR-grade optical polish is not required — giving a practical, cost-effective middle ground.
Packaging & Food Industry
1.2085 is used for packaging and food-contact moulds where hygiene, corrosion resistance and dimensional stability under repeated cleaning cycles are important.
Industries We Serve
- Plastic injection moulding industry
- Packaging manufacturing
- Medical & healthcare product manufacturing
- Food-contact component manufacturing
- Consumer goods production
- Engineering & tooling workshops
Authorized Stockist
Grade 1.2085 Supply Locations Across India
We supply Grade 1.2085 steel across major industrial cities including Mumbai, Pune, Khopoli, Nashik, Aurangabad, Navi Mumbai, Palghar, Umbergaon, Vapi, Valsad, Daman, Vadodara, Ahmedabad, Rajkot, Hyderabad, Bangalore, Chennai, Cochin, Delhi, Gurgaon, Manesar and Sonipat — as well as to export markets.
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Our Services
Frequently Asked Questions
About Purohit Steel
Purohit Steel was established in 1965 by Shree Bherumalji Rajpurohit, a visionary in metallurgy. Over the decades, we have built a strong reputation as a trusted stockist and exporter of tool steel, plastic mould steel and engineering steel products across India.
As an ISO-certified company, we source premium materials from globally reputed manufacturers and operate a modern warehousing facility in Vasai along with a sales outlet in Mumbai, enabling efficient storage, fast processing and timely delivery across India and export markets.
With decades of relationships with tool & die manufacturers and a customer-focused approach, Purohit Steel continues to deliver reliable, technically supported steel solutions for the mould-making industry.
Read more about Purohit Steel, view our certifications, or get in touch with our technical sales team.
Our Certifications
Purohit Steel operates as an ISO-certified company, backed by documented quality management, safety and compliance certifications that support reliable supply to domestic and export customers.
View all certificates in detail on our Certifications page.
Countries We Export Worldwide
Beyond India, Purohit Steel exports tool & mould steel grades to customers across the following countries and regions:
| Export Destinations | |||||
|---|---|---|---|---|---|
| UAE | Saudi Arabia | Oman | Bangladesh | Sri Lanka | Nepal |
| Vietnam | Thailand | Indonesia | Kenya | Nigeria | South Africa |
For export enquiries and destination-specific documentation, please contact our sales team.
Export Packaging & Shipping
Bars, flats and blocks are packed to withstand handling, transit and marine shipment, whether for domestic dispatch or export orders.
- Palletised and strapped packing for round bars, flat bars and blocks
- Moisture-protected wrapping to prevent surface corrosion in transit
- Seaworthy export packing with clear shipping marks and material identification
- Documentation support including packing lists, invoices and mill test certificates for customs clearance
- Shipment by road, rail or sea freight as per order requirement and destination
Quality Inspection & Testing
Every batch held in our stock is checked through documented inspection procedures before dispatch, so mould makers and OEMs receive material with verified, traceable quality.
- Chemical composition verification against mill certificates
- Hardness testing (Brinell / Rockwell) on received stock
- Dimensional inspection as per standard bar and block tolerances
- Visual and surface defect inspection
- EN 10204 2.2 / 3.1 mill test certificates provided on request
- Third-party inspection coordination available for export orders
Full material traceability is maintained from incoming stock through to dispatch for every order.
Latest Price List
Pricing depends on section size, quantity, form (round bar / flat bar / block) and current raw material rates. Indicative guidance is below — contact us for a firm, up-to-date quotation.
| Form | Typical Price Basis |
|---|---|
| Round Bar | Per Kg, based on diameter & length — contact for latest rate |
| Flat Bar / Plate | Per Kg, based on thickness & size — contact for latest rate |
| Block (cut to size) | Per Kg / Per Piece, based on drawing — contact for latest rate |
Prices are subject to change with raw material and freight costs. Share your required size and quantity via the quotation form or WhatsApp for the latest price.
MOQ & Payment Terms
Minimum Order Quantity: Flexible MOQ depending on size and form — from small trial quantities for tooling houses up to bulk orders for OEMs, subject to confirmation at enquiry stage.
Payment Terms: Advance payment / part-advance with balance before dispatch for domestic orders; T/T (bank transfer) or Letter of Credit (LC) for export orders, depending on order value and destination.