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2026 SIJ - Slovenian Steel Group, d. d.

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CNJ
Product typeFind your steelMechanical EngineeringSIQUAL 6580
Brand6580

High-Strength Low Alloy Steel

SIQUAL 6580 is ideal for manufacturing permanently stressed components with large cross sections, making it a prime choice for automotive, mechanical engineering, and other industries. Its high strength and toughness, combined with good fatigue resistance, ensure reliable performance under severe dynamic stresses. This alloy is particularly suitable for applications where parts must be optimized for maximum strength and toughness to ensure economic and durable performance.

Industries in detail

  • Defence
  • Aviation
  • Automotive
  • Construction
  • Energy
  • Mechanical Engineering
  • Oil & Gas
  • Tooling

SIQUAL 6580 data sheet

SIJ Group
General contact
SIJ Group
SIJ Group
info@sij.si

Manufacture

SIQUAL 6580 is made by SIJ Metal Ravne.

Standards & certificates

Material number

1.6580

Ravne

VCNMO200

EN

30CrNiMo8

AISI/SAE

4340

Properties

Elasticity[10³ x N/mm²]:210
Density[g/cm³]:7.82

Chemical composition

In weight %

C0.30
Si0.40
Mn0.45
Cr2.00
Mo0.40
Ni1.90

Product forms

Flat sections

rolled
Wup to 850 mm
Tup to 450 mm

Forgings

forged
Lup to 10000 mm
⌀up to 1000 mm

Round bars

forged
Lup to 6000 mm
⌀up to 1050 mm

Tempering

Hardening

 Harden from a temperature of 830-880 °C followed by oil quenching. 

Forging

 Harden from a temperature of 830-880 °C followed by oil quenching. 

Disclaimer

The information and data presented herein are typical or average values. The typical properties of the materials described are provided solely to assist readers in making their own evaluations and decisions. These values are not guaranteed.
Applications specifically suggested for the materials described are intended only for illustrative purposes, enabling the reader to make their own assessments. They are not to be construed as warranties, whether express or implied, regarding fitness for any particular purpose.
The information and data are provided for informational purposes only and may be revised at any time without notice.
Unless otherwise specified, all registered trademarks are the property of SIJ – Slovenska industrija jekla, d.d. (Slovenian Steel Group) and its subsidiaries (SIJ Group).
Copyright © 2024 by SIJ Group. All rights reserved. Contact us for further information.

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SIJ Group
General contact
SIJ Group
SIJ Group
info@sij.si