Inquiry

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"SeahSS" (hereinafter referred to as the "Company") respects the privacy of its clients and abides by the "Act on Promotion of Information and Communications Network Utilization and Information Protection." The Company notifies the client of the purpose and means for which the personal information provided by the client in accordance with the personal information administration policy is used, as well as the security measures implemented to protect personal information. If the Company modifies its policy on the administration of personal information, it will post notices on its website and/or send out individual notifications. This policy will be implemented as of: February 1st, 2023.

Personal information to be collected: name, e-mail address
The purpose of collecting and using personal information: the client’s requests
Period of retention and use of personal information: The Company will destroy the personal information of the client without delay when the purpose of its collection and use has been achieved.

Tool Steel & Die Steel

As the No.1 tool steel and die steel maker in Korea, we provide high-quality products with enhanced properties such as wear resistance, machinability, and surface finish through advanced alloy design and process control technologies.

01

Exceptional Mechanical Properties and Outstanding Purity

With balanced enhancements in properties such as toughness, hardness, hardenability, and wear resistance,

our products are optimized for various usage environments. They also boast stable quality and performance with exceptional durability.

02

Diverse Product Lineup

We develop and offer a variety of high-performance tool steels tailored to customer environments.

From ultra-high-strength steel forming tools to Matrix HSS-type die materials,

we always provide the best solutions for our customers.

03

A Specialized Brand with Top Quality and the Largest Distribution Network

We have the infrastructure and technology to supply products in various forms and precise dimensions to the right place at the right time based on customer needs. To penetrate domestic and international markets, we offer premium tool steel brands with enhanced durability, achieving differentiation in our tool steel products.

  • Cold Work Tool Steel
    DuMAC Series

    Press Dies

    Industrial Knives

    Punches

    Roll Dies

  • Hot Work Tool Steel
    DuRAH Series

    Hot Forging Dies

    Extrusion Dies

    Die Casting Dies

    Industrial Knives

  • General Purpose Mold Steel TP Series

    Automotive Interior and Exterior Parts

    Refrigerators, Washing Machines, TVs, etc.

    Plastic Molds

  • Precision Mold Steel
    SMAT Series

    High-Gloss Precision Plastic Molds for Transparent Lenses of Automotive Lamps and TV Front Bezels

  • Rolls

    Work Rolls and Intermediate Rolls for Cold Rolling in Steel Plants

Key Products

  • DuMAC MAX(ESR, 1C-8Cr-Mo-V)

    High hardness and enhanced chipping suppression for extended die life

  • DuMAC PRO(1C-8Cr-Mo-V)

    Improved dimensional stability and machinability after heat treatment

  • DuMAC 11

    Cold work tool steel with stable wear resistance

  • DuMAC WF(ESR, 0.6C-4.5Cr-Mo-V)

    High-toughness Matrix HSS (High-Speed Steel) with ESR applied

  • DuMAC RD(1C-7Cr-Mo-V)

    Specialized steel with high hardness (HRC 64) and toughness

  • DuMAC DK(0.8C-8Cr-Mo-V)

    Specialized steel for high toughness and chipping suppression

  • DuRAH MAX (ESR, 5Cr-2.8Mo-V)

    Enhanced high-temperature hardness, toughness, and resistance to heat checks for extended die life

  • DuRAH PRO (5Cr-1.5Mo-V)

    Improved high-temperature strength and toughness compared to DuRAH 61, extending die life

  • DuRAH 61

    Stable high-temperature strength and toughness

  • DuRAH FX (5Cr-1Mo-V)

    Improved toughness to reduce cracking

  • SMAT E (ASTM P20+Ni Modified)

    Ni-Cr-Mo-based pre-hardened steel

    Excellent surface finish, weldability, and corrosion machinability

  • SMAT F (ASTM P21 Modified)

    Ni-Al-Cu-based precipitation-hardening steel

    Excellent precision machining and surface finish

  • SMAT G (WNr1.2343 Modified)

    5% Cr QT-treated steel

    Superior thermal conductivity and wear resistance

  • SMAT V (WNr1.2083 Modified)

    STS 400 series QT-treated steel

    Excellent corrosion and wear resistance

Packing Specifications

Bare Packing

Secured at 5 points with flat iron bands

Hessian Packing

1. Secured at 5 points with flat iron bands
2. Packaged with vinyl + hessian

Bare Packing

Secured at 5 points with flat iron bands

Hessian Packing

1. Secured at 5 points with flat iron bands
2. Packaged with vinyl + hessian

Wooden Slate

1. Secured at 5 points with flat iron bands
2. Packaged with vinyl + hessian
3. Reinforced with wooden slates

Wooden Box

1. Secured at 5 points with flat iron bands
2. Packaged with vinyl + hessian
3. Enclosed in a wooden box