P20 Steel Plates and DIN 1.2311 Steel – India’s Trusted P20 Material Supplier

Milano Special Steel is a leading importer, manufacturer, and supplier of P20 material in India, offering P20 Steel Plates and DIN 1.2311 material in various forms, including plates, flats, blocks, and round bars, at competitive prices with fast, nationwide delivery. Since 1972, the company has served the aluminum die casting, pressure die casting, plastic mold making, automotive, sheet metal cutting, cutting-tool, and forging industries with premium steel grades, precise chemical compositions, and consistent mechanical performance.

Why choose Milano Special Steel

• 50+ years of trust: Established in 1972 with deep application engineering know-how across tooling and mold industries.

• Complete range in stock: P20 Steel Plates, DIN 1.2311 Steel, P20/1.2311 round bars, prehardened blocks, and near-net cut pieces for faster machining.

• Best Price Guarantee: Our strategic sourcing, large-volume inventories, and in-house processing enable us to deliver competitive pricing for both wholesale and retail orders.

• Pan-India delivery: Rapid dispatch from hubs in Gurugram, Kundli, Sonipat, Manesar, Bawal, Bhiwadi, and Dharuhera to all Indian states and major cities.

• Precision cut-to-size: Saw-cut, waterjet/plasma cut, milling, face grinding, and deep drilling to customer drawings and tolerances.

• Application support: Guidance on grade selection, heat treatment routes, surface hardening, and finishing for plastic molds, die casting tooling, and fixtures.

P20 Steel Plates – Properties, Applications, and Availability

P20 Steel Plates are prehardened mold steels engineered for a balanced combination of toughness, machinability, hardness uniformity, and polishability. Typically supplied at approximately 28–34 HRC (approximately 280–325 HB), P20 is widely used in plastic injection molds, mold bases, blow molds, die casting dies for zinc, and various tooling components that require dimensional stability and a good finish. Uniform hardness throughout the section helps minimize warpage and rework, while the composition supports nitriding or carburizing for enhanced surface wear resistance.

Key Benefits of P20 Steel Plates

• Prehardened and ready-to-machine: No hardening distortion risk; suitable for rapid mold development and short lead times.

• Excellent machinability: A clean microstructure supports consistent cutting, drilling, and milling—even in large cross-sections.

• Excellent polishability: Achieves a reliable high-gloss finish for plastic mold cavities and cosmetic parts.

• Stable and uniform hardness: Consistent through-section hardness for large plates and blocks reduces the need for finishing cycles.

• Surface hardening compatibility: Nitriding, carburizing, and PVD/CVD coatings can enhance wear and anti-soldering performance.

Typical uses of P20 Steel Plates

• Plastic injection molds and mold bases for automotive interiors, consumer products, and appliance housings.

• Blow molds and fixtures for packaging and container tooling.

• Zinc die casting dies and inserts are used where moderate hot strength and wear are needed.

• Backing plates, bolsters, holders, and structural tooling components.

DIN 1.2311 Steel (P20) – Composition and Performance

DIN 1.2311 Steel (also known as P20 Steel, 40CrMnMo7, 3Cr2Mo) is a medium-carbon, low-alloy plastic mold steel designed for prehardened delivery and excellent machinability. Its chromium and molybdenum additions provide hardened structure stability, wear resistance, and good compressive strength. Compared to sulfur-added 1.2312, DIN 1.2311 material prioritizes toughness and uniformity with lower sulfur content, making it a dependable choice for critical, high-polish cavities and larger tools.

Performance highlights

• Hardness: Usually supplied at 28–34 HRC; supports uniform hardness in large cross-sections.

• Strength: Adequate tensile and compressive strength for mold bases and inserts.

• Wear resistance: Sufficient for unfilled polymers; surface hardening boosts performance for abrasive or filled resins.

• Toughness: Balanced to resist chipping and cracking in milling and service.

• Polishability: Compatible with high gloss, EDM recast removal, and finishing to mirror grades.

DIN 1.2311 Material vs 1.2312 and Allied Grades

• DIN 1.2311 (P20): Lower S, better toughness and polishability; preferred for high-gloss mold cavities and larger tools.

• DIN 1.2312 (P20+S): Free-machining variant with higher sulfur; higher machinability, slightly reduced polishability, and toughness—ideal for mold bases and non-critical surfaces.

• P20+Ni / 1.2738: Nickel-bearing variant for improved core toughness and hardness uniformity in very large sections.

• Stainless mold alternatives: DIN 1.2083 (AISI 420) and 1.2316 for corrosive plastics and waterlines with a higher risk of rusting.

• Hot-work alternatives: H13/1.2344 for dies needing hot strength and thermal fatigue resistance in die casting and extrusion.

P20 Material Supplier – What Sets Milano Apart

As a specialized P20 material supplier, Milano Special Steel ensures quick availability, consistent quality, and value-added processing that reduces the total cost of ownership for toolmakers and OEMs.

What buyers gain

• Ready stock: P20 Steel Plates/DIN 1.2311 plates, blocks, and rounds in standard and large dimensions, including wide, thick sections.

• Processing services: Precision sawing, face milling, grinding, gun drilling, and roughing to near-net shapes that cut CNC hours.

• Quality assurance: Traceable heats, ultrasonically tested blocks, and dimensional inspection to specification before dispatch.

• Flexible order sizes: Wholesale mill lots and retail cut pieces are available, with single-piece fulfillment options available upon request.

• Logistics and timelines: Quick turnarounds, optimized packing for safe transit, and priority shipping for urgent projects.

Industries served

• Aluminum die casting and pressure die casting tooling: Holders, die shoes, inserts, backup plates, and die bases.

• Plastic injection mold and blow mold makers: Cavity/core blocks, sliders, lifters, ejector plates, and mold bases.

• Automotive tooling: Interior and exterior plastic tooling, fixtures, checking gauges, and prototype mold tooling.

• Sheet metal cutting and forming: Backing plates, support structures, and precision fixture components.

• Cutting tool and jig manufacturing: Structural plates, guide blocks, and robust tool bodies.

• Forging and general engineering: Plates and blocks for tooling assemblies and high-strength supports.

DIN 1.2311 Material – Technical Snapshot

Note: The values below represent the typical market supply for P20/DIN 1.2311 materials. Exact specifications can be aligned to project requirements and mill standards.

• Typical hardness (prehardened): 28–34 HRC (approx. 280–325 HB)

• Common delivery: Forged and prehardened plates/blocks/rounds; UT-tested blocks on request

• Chemical composition range (typical, wt.%): C 0.35–0.45, Mn ~1.3–1.6, Si ~0.2–0.4, Cr ~1.8–2.1, Mo ~0.15–0.25, P ≤0.03, S ≤0.03

• Heat treatment guidance:

  • Stress relief after heavy machining to reduce residual stress

  • Nitriding for 58–65 HRC case hardness (case depth as specified)

  • Carburizing is possible for high surface hardness when required by design

• Machining: Good machinability in prehardened state; stable cutting with appropriate carbide tooling and coolant

• Surface finish: Excellent polishability; EDM recast must be removed before final polish for optical finishes

• Coatings: Compatible with PVD/CVD coatings when higher wear or anti-soldering behavior is desired

• Weldability: Possible with appropriate preheat/interpass control; post-weld stress relief recommended

Product forms – P20 Steel Plates and DIN 1.2311 Steel

Available forms

• P20 Steel Plates and blocks: Precision sawn, face-milled, ground; large cross-sections stocked for mold bases and cavity blocks

• Round bars: Peeled/turned/ground rounds for shafts, holders, and mold components

• Flats and squares: Standard tool room sizes and custom cut pieces

• Near-net shapes: Rough milled to 3D profiles from customer drawings to save cycle time

Common sizes supplied

• Plate thickness: ~20 mm to 400+ mm

• Widths: Standard and wide plates for large tools

• Lengths: Standard commercial lengths; custom cut lengths supplied

• Rounds: From small diameters to large forged rounds

P20 Steel Plates Quality and Testing

Milano Special Steel emphasizes the consistent quality of its steel, aligned with international standards for mold and tool steels.

• Mill certificates and heat traceability

• Ultrasonic testing for block integrity on request

• Hardness checks and dimensional inspection

• Surface preparation: black, milled, ground, or polished as specified

• Tolerances tailored to machining approach and fixturing needs

Best price promise and cost efficiency

P20 Steel Plates and DIN 1.2311 material are offered at highly competitive prices due to:

• Large volume imports and optimized procurement

• In-house processing that reduces outside subcontracting costs

• Inventory planning to ensure competitive landed prices

• Value engineering to match the grade and processing to the application

Service locations and delivery coverage

Operational hubs include Gurugram, Kundli, Sonipat, Manesar, Bawal, Bhiwadi, and Dharuhera, enabling fast dispatch to every Indian state and union territory: Andhra Pradesh, Arunachal Pradesh, Assam, Bihar, Chhattisgarh, Goa, Gujarat, Haryana, Himachal Pradesh, Jharkhand, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Manipur, Meghalaya, Mizoram, Nagaland, Odisha, Punjab, Rajasthan, Sikkim, Tamil Nadu, Telangana, Tripura, Uttar Pradesh, Uttarakhand, West Bengal, Andaman and Nicobar Islands, Chandigarh, Dadra and Nagar Haveli and Daman and Diu, Delhi, Jammu and Kashmir, Ladakh, Lakshadweep, and Puducherry—including all major cities such as Bangalore, Pune, Surat, and beyond.

Application notes – aluminum die casting, pressure die casting, and plastic molds

• Aluminum and pressure die casting: P20 Steel Plates work well for holders, die shoes, backing plates, and medium-duty inserts where hot-work properties are not the primary requirement. For high-thermal-fatigue zones, consider H13/1.2344 for the die cavity and P20 for support components.

• Plastic injection molding: Choose DIN 1.2311 Steel for reliable, pre-hardened cavity/core blocks, excellent machinability, and good high-gloss potential. For corrosive resins or aggressive waterline environments, consider stainless mold steels, such as 1.2083/1.2316, for inserts.

• Blow molding and packaging: P20’s uniform hardness and machinability suit bottle and container molds requiring repetitive polishing and dimensional stability.

• Tooling and Fixtures: P20 plates are ideal for high-stiffness jigs, fixtures, and precision bases that require consistent through-hardness.

Processing capabilities

To shorten machining time and improve toolroom throughput, Milano Special Steel offers:

• Precision sawing for rectangular and contour cuts

• Face milling and surface grinding for parallelism and flatness

• Deep/gun drilling for cooling channels and weight reduction

• CNC roughing and near-net shaping to reduce chips and cycle times

• Stress-relieving post-roughing to minimize distortion

• Final finishing support and surface preparation guidance

How to select between P20, DIN 1.2311 material, and alternatives

• Select P20 Steel Plates/DIN 1.2311 when Prehardened, ready-to-machine plates/blocks are required, with good polishability, uniform hardness, and minimal heat-treatment risk.

• Choose 1.2312 (P20+S) when: High machinability is the priority and ultra-high gloss is not critical (e.g., mold bases, non-cosmetic areas).

• Opt for 1.2738 (P20+Ni) when: Very large sections need superior hardness uniformity and core toughness.

• Use stainless mold steels (1.2083/1.2316) when Corrosive plastics (e.g., PVC), aggressive cooling, or a risk of rust is high.

• Use H13/1.2344 for hot-work dies when: High hot strength and thermal fatigue resistance are critical (die casting/extrusion cavities).

Frequently asked questions:-

Q1. What hardness do P20 Steel Plates typically have?
A. Prehardened P20 is commonly 28–34 HRC, enabling direct machining without hardening. For higher wear, consider nitriding or coatings.

Q2. Is DIN 1.2311 Steel the same as P20?
A. Yes, DIN 1.2311 material is the DIN/EN counterpart of P20, also referenced as 40CrMnMo7 and 3Cr2Mo, with closely aligned chemistry and performance.

Q3. Can Milano Special Steel supply cut-to-size P20 plates?
A. Yes—custom-cut pieces, rough-milled blocks, deep-drilled plates, and near-net shapes are supplied to drawings with fast turnaround.

Q4. Which is better for high-gloss molds: 1.2311 or 1.2312?
A. 1.2311 generally provides better polishability and toughness; 1.2312 offers improved machinability due to sulfur additions.

Q5. Do you deliver across India?
A. Yes—fast delivery is available nationwide from multiple hubs, covering all Indian states and union territories.

Q6. What documents are provided?
A. Mill test certificates, heat numbers, UT reports (on request), and dimensional inspection records as required.

Why buy P20 Steel Plates from Milano Special Steel?

• Specialist in P20 Steel Plates and DIN 1.2311 material

• Top importer, manufacturer, and P20 material supplier with the best price

• Comprehensive inventory and rapid cut-to-size service

• Technical guidance and application support

• Consistent quality, traceability, and nationwide delivery

Get a quote for P20 Steel Plates and DIN 1.2311 Steel

For instant quotes, availability, and technical guidance, contact:

• Website: https://www.milanospecialsteel.com/

• Specialized portals: https://www.p20highhardsteel.com, https://www.p20steel.com, https://www.p20steelsupplier.com, https://www.dc53steel.com/,

• Email: info@milanospecialsteel.com