Bright steel

Bright steel

Around the world, peeled bright steel supplied by GMH Gruppe forms the basis for high-tech components. At all our locations, our specialists work together on meeting our customers' requirements precisely – from high-quality feed material up to and including ready-to-use components.

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Definition

Bright steel - and round steel - is characterised by its smooth, as clean as possible surface. Our bright steel, peeled to ultra-tight tolerances, meets maximum standards for dimensional accuracy. It therefore forms the basis for a broad and diverse range of components for use, for example, in steering and power train systems, in piston rods, in automotive, plant and mechanical engineering and in numerous specialised applications.

Production process

GMH Gruppe's bright steel is produced on highly productive and efficient bright steel lines. Hot-rolled steel bar is peeled, straightened and polished to in many cases ultra-tight standardised and customer tolerances by means of chip-removing machining. A large range of machining and heat-treatment methods, CNC machines and ultra-accurate inspection equipment ensures precise attainment of our customers' specifications.

Benefits

Short routes and efficient processes operating in close cooperation make possible the rapid availability of bright steel products in a highly diverse range of grades, special chemical analyses and test heats. Within GMH Gruppe we produce a large range of steel grades, numerous surface finishes and heat-treatment states and are able to meet individual customer requirements with maximum dimensional accuracy.

  • Efficient and flexible processes
  • More than 500 different grades
  • Rapid availability

Our supply range

High-quality bright steel forms the basis for high-quality products and high-tech applications.

Dimension range Grade Heat treatment Material No.  
18-30 42CrMo(S)4 +QT 1.7225 + 1.7227 Request quotation
31-82 42CrMo(S)4 +QT 1.7225 + 1.7227 Request quotation
82-125 42CrMo(S)4 +QT 1.7225 + 1.7227 Request quotation
18-30 16MnCr(S)5 +FP 1.7131 + 1.7139 Request quotation
31-82 16MnCr(S)5 +FP 1.7131 + 1.7139 Request quotation
82-125 16MnCr(S)5 +FP 1.7131 + 1.7139 Request quotation
18-30 ZF6 +FP 1.7160 Request quotation
31-82 ZF6 +FP 1.7160 Request quotation
82-125 ZF6 +FP 1.7160 Request quotation
18-30 ZF7B +U 1.7168 Request quotation
31-82 ZF7B +U 1.7168 Request quotation
82-125 ZF7B +U 1.7168 Request quotation
18-30 SAE 8620 +FP 1.6523 + 1.6526 Request quotation
31-82 SAE 8620 +FP 1.6523 + 1.6526 Request quotation
82-125 SAE 8620 +FP 1.6523 + 1.6526 Request quotation

Dimensions/lengths

  • Peeled and straightened in conformity to DIN EN 10277 and DIN EN 10278: 18 – 250 mm round
  • Peeled and straightened up to tolerance range h9: 18 – 250 mm round
  • Peeled, straightened and polished to h6: 18 – 160 mm round
  • Depending on dimensions, up to max. 26.0 m
  • Other lengths and short lengths by agreement

Heat treatment options

  • Treated for special mechanical strength (+TH)
  • Soft annealed (+A)
  • Stress-relieving annealed (+SR)
  • Treated for special microstructure (+FP)
  • Normalising annealed (+N)
  • Quenched and tempered (water or air hardening) (+QT)
  • Treated for shearability (+S)
  • Spheroidising annealed (+AC)
  • Treated for sawability

Machining/End finish

  • Sawing
  • Bevelling
  • Centering
  • Turning
  • Milling
  • Deep hole drilling
  • Abrasive cutting
  • Chamfered
  • Sawn and deburred
  • Special types

Certificates/Approvals/Certificate types

  • IATF 16949
  • DIN EN ISO 9001
  • DIN EN ISO 14001
  • DIN EN ISO 50001
  • Bureau Veritas (BV)
  • Det Norske Veritas (DNV)
  • Germanischer Lloyd (GL)
  • Saxony-Anhalt Materials Testing Institute
  • Lloyd’s Register of Shipping (LRS)
  • TÜV inc. TRD 100 and AD-W0
  • Certification in acc. with DIN EN 10204
  • Test Report 2.2/3.1/3.2

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Competence Center Steel Processing