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AISI 420 / 4Cr13(H) Stainless Mold Steel Round Bar | Precision Turned & Ground Stock – KUTU

Material

4Cr13(H) martensitic stainless steel

Diameter

4mm to 200mm

Surface

Black skin, turned, ground, polished

Hardness

Annealed ≤229HB; Pre-hardened 30–35 HRC

Key Composition

C:0.16–0.25%, Cr:12.00–14.00%

Feature

Corrosion resistant, rustproof, good polishability

Applications

Mould ejector pins, core pins, medical parts, food machinery parts

Corrosion-Resistant AISI 420 / 4Cr13(H) Precision Turned Stainless Round Bar Pre-hardened stainless steel round stock supplied bright turned or ground. Offers high wear resistance, rust protection, and excellent machinability for core pins. Key Advantages & Capabilities

  • Precision Turned/Ground: Controlled outer diameter tolerances for rapid turning.

  • Rust Resistance: Excellent performance in high-humidity injection environments.

  • Stable Machinability: Turn-ready round stock with minimal internal stress. 💡 Optional On-Demand Machining & Wire-EDM Services

  • CNC Turning: Pre-machined stepped pins and core rods.

  • Centerless Grinding: Strict diameter tolerances for pin guides.

  • Wire EDM: Custom keyway and profile slotting. Technical Specifications

  • Grades: AISI 420 | 4Cr13(H) | DIN 1.2083 Round Bar

  • Condition: Annealed or Pre-Hardened | Precision Turned / Ground

  • Applications: Core pins, ejector sleeves, corrosion-resistant shafts.

  • 📩 Upload your CAD drawings or dimensional requirements for a 2-hour quote.

 

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A:Absolutely. Beyond supplying raw materials, we provide full custom precision machining services. This includes CNC milling, grinding, surface flattening, and custom vacuum heat treatment tailored to your exact blueprints. We deliver near-net-shape blocks to save your production time.

A:Yes, our facility is equipped with heavy-duty CNC milling machines, high-precision grinding machines, and automated sawing systems. We supply not only raw tool steel plates but also fully machined mold bases and custom-sized steel blocks according to your industrial specifications.

A: Our comprehensive service covers everything from steel grade selection consulting to custom cutting, precision machining, and full internal ultrasonic testing (SEP 1921-84). This ensures global toolmakers receive ready-to-use materials with guaranteed quality.

A: Yes, absolutely. We understand that tool and mold steel reliability is critical to your tooling life and production stability. We provide free material samples (standard test blocks or small discs) for metallurgical analysis, chemical composition testing, and hardness verification. You can place a sample request via our chat or contact forms.

A: While the steel material itself is 100% free, international express freight (via DHL, FedEx, or UPS) is typically covered by the buyer. You can provide your courier account number for freight collect. Our Premium Policy: The exact shipping cost you paid for the sample will be 100% credited back and deducted from your first bulk trial order invoice, making the entire sample process completely risk-free for you.

Material

4Cr13(H) martensitic stainless steel

Diameter

4mm to 200mm

Surface

Black skin, turned, ground, polished

Hardness

Annealed ≤229HB; Pre-hardened 30–35 HRC

Key Composition

C:0.16–0.25%, Cr:12.00–14.00%

Feature

Corrosion resistant, rustproof, good polishability

Applications

Mould ejector pins, core pins, medical parts, food machinery parts

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