O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel

Product Details
Customization: Available
Type: Round Bar
Standard: AISI, DIN, JIS, GB
Diamond Member Since 2025

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  • O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel
  • O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel
  • O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel
  • O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel
  • O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel
  • O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel
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  • Overview
  • Product Description
  • Our Advantages
  • Applications
  • Packaging & Shipping
  • FAQ
Overview

Basic Info.

Model NO.
ASTM A681/O1/1.2510/100MnCrW4/SKS3
Technique
Forged/Hot Rolled/Cold Drawn
Shape
Flat Bars/Plates/Blocks/Round Bars
Surface Treatment
Polished, Turned, Peeled, Ground, Black
Special Use
Mold Steel
Application
Tool Steel Bar
Heat Treatment
Annealed, Quenched, Tempered
Delivery Time
According to The Inventory Situation
Product Application
Aluminium Extrusion Die/Pressing Mold etc
Certificate
ISO
Price
to Be Confirmed Based on Order Details
Transport Package
Standard Packaging
Specification
According to order
Trademark
ZEICIN
Origin
China
Production Capacity
10000 Ton / Year

Product Description

 O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work SteelO1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel
Product Description
 

O1 Tool Steel | 1.2510 | SKS3 - High-Performance Cold Work Steel

O1 Tool Steel (AISI/ASTM A681) is a durable, low-alloy steel that is oil-quenched during heat treatment. It offers excellent wear resistance and is commonly used for making tools and dies. Thanks to its high tungsten and chromium content, it provides good toughness and maintains a sharp cutting edge.

O1 steel has deep hardening properties and responds well to heat treatment with minimal dimensional changes. Available in rounds, flats, squares, and drill rods, O1 Tool Steel is a reliable choice for cold work applications and can be customized to meet specific needs.

Similar Grade

ZEICIN Grade GB AISI DIN JIS
O1/ SKS3 - ASTM A681/ O1 1.2510/ 100MnCrW4 G4403/ SKS3


Main Chemical Composition%

C W Mo Cr V Co Al Mn Si S P
0.85-1.00 0.40-0.60 - 0.40-0.70 ≤0.30 - - 1.00-1.40 0.10-0.50 0.030 0.030

 

 

O1 Tool Steel | 1.2510 | SKS3 - High-Performance Cold Work Steel Heat Treatment

  • Annealing
    Annealing should be done after hot working and before re-hardening.
    Heat to 802-816°C, holding for 1 hour per inch of thickness, at least 2 hours. Then cool slowly to room temperature, resulting in a maximum hardness of 212 HBW.

    Stress Relief (Unhardened Material)
    Heat slowly to 1250°F (677°C), soak for 2 hours per inch of thickness, then slow cool to room temperature.

    Hardening
    Preheat: Heat to 1100°F-1200°F (593°C-649°C).
    Hardening: Heat to 1475°F-1500°F (802°C-815°C), soaking for 30 minutes per inch of thickness.
    Quench: Quench O1 steel in warm oil, cool to 125°F-150°F (52°C-66°C), then temper immediately.

    Tempering
    O1 steel typically requires a single tempering, though double tempering may sometimes be necessary. Soak for 2 hours per inch of thickness for each temper, then air cool to room temperature. The tempering temperature range is 300°F to 450°F (149°C to 232°C).

    Stress Relief Temper
    For hardened materials that have been ground, welded, or processed by EDM, stress relief tempering is recommended. Choose a tempering temperature 25°F or 50°F lower than the last tempering temperature used.

     

    Process Temperature Duration
    Annealing 802-816°C 1 hour per inch (min 2 hours)
    Stress Relief 1250°F (677°C) 2 hours per inch
    Preheat 1100°F-1200°F (593°C-649°C) -
    Hardening 1475°F-1500°F (802°C-815°C) 30 minutes per inch
    Tempering 300°F-450°F (149°C-232°C) 2 hours per inch
    Stress Relief Temper 25°F or 50°F lower than last temper -
 
Our Advantages

 

O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work SteelO1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel

O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work SteelO1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel

1. Exceptional Value for Money
High Performance at Competitive Pricing
Our O1 Tool Steel (1.2510/SKS3) offers excellent wear resistance, toughness, and dimensional stability at a competitive price. It is ideal for making cutting tools, dies, and punches, combining high performance with affordability.

2. Advanced Manufacturing Technology
Precision Manufacturing Process
O1 Tool Steel is produced using modern methods, ensuring high-quality steel, uniform microstructure, and enhanced mechanical properties. It is well-suited for cold work applications like cutting, punching, and die-making.

Controlled Heat Treatment
We optimize hardness (47-54 HRC after tempering) and wear resistance through precise heat treatment, ensuring consistent performance in high-stress environments.

3. Reliable Product Quality
Strict Process Quality Control
We maintain strict quality control at every stage, ensuring consistent mechanical properties, uniform microstructure, and accurate dimensions in every batch of O1 Tool Steel.

Compliance with Global Standards
O1 Tool Steel meets international standards like ASTM A681, DIN EN ISO 4957, and JIS G4404, making it reliable for industries like automotive, aerospace, and tooling.

4. Technical Expertise and Customization
Continuous Process Optimization
We continuously improve our processes to meet the evolving needs of industries, maintaining high performance and reliability.

Customized Solutions Available
We offer O1 Tool Steel in various forms, including round bars, flat bars, and sheets, with customized heat treatments and finishes to meet specific customer needs.

 

Surface condition
O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel

O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work SteelO1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel

Applications

Applications of O1 Tool Steel | 1.2510 | SKS3 - High-Performance Cold Work Steel

Our O1 Tool Steel (1.2510/SKS3) is used in various cold work applications that require precision and durability. Typical uses include:

  • Blanking Dies: For blanking operations, offering wear resistance.

  • Forming Dies: For cold forming, providing strength and precision.

  • Cutting Tools: Includes slitters, punches, and trimming tools.

  • Gages and Jigs: For precise measurement and fixture tools.

  • Plastic Mold Dies: For making molds with high wear resistance.

  • Thread Roll Dies: Used in thread rolling with consistent performance.

  • Swaging Dies: For swaging applications, offering toughness.

  • Bolster Dies and Knock-Out Pins: Durable and strong for die applications.

O1 Tool Steel is a reliable choice for cold work applications, offering long-lasting performance and high precision.

O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel
O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel
O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel
O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel

 

Packaging & Shipping
O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work SteelO1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work SteelO1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work SteelO1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel
FAQ
O1 Tool Steel 1.2510 Sks3 - High-Performance Cold Work Steel
Q1: What are the advantages of O1 Tool Steel | 1.2510 | SKS3 over conventional tool steels?

A: O1 Tool Steel (1.2510/SKS3) offers excellent wear resistance and toughness, making it ideal for precision tools, dies, and punches. It performs better than conventional tool steels in cold work applications, maintaining a sharp cutting edge and durability at ambient temperatures.

Q2: What sizes and forms do you supply for O1 Tool Steel | 1.2510 | SKS3?
A: We supply O1 Tool Steel (1.2510/SKS3) in round bars, flat bars, sheets, and custom blanks. Sizes can be tailored to meet customer needs for various cold work tooling applications.

Q3: Do you offer customized solutions for O1 Tool Steel | 1.2510 | SKS3?
A: Yes, we offer customized sizes, heat treatments, and surface finishes to ensure the best performance for specific cold work tooling applications.

Q4: How do you ensure product quality consistency for O1 Tool Steel | 1.2510 | SKS3?
A: We maintain strict quality control at every stage of production to ensure consistent mechanical properties, uniform microstructure, and accurate dimensions, guaranteeing reliable performance.

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