Steel bar

High-quality feed material is vital for the quality of the end product. For this purpose, GMH Gruppe supplies rolled steel bar that meets even the automotive sector's ultra-high safety standards.

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Definition

DIN EN 10079 defines steel bar as hot-formed bars which exhibit the same cross-section throughout their length. Within the GMH Gruppe, steel bar provides the basis for high-quality bright steel and, for our customers, a high-quality feed material for excellent end products: rotor and crankshafts, piston rods, pistons and wheel bearings, gear racks, differentials and components for e-mobility.

Production process

In our electric arc furnace (EAF) we produce more than 500 grades of steel from which high-precision rolling lines make steel bar with extreme tolerance accuracy. We precisely adjust the materials properties of the steel bar by means of heat treatment. We also deploy high-performance simulation systems and ultra-accurate analyses to ensure that our steel bar meets even the maximum demands made by motor-vehicle manufacturers and their subsuppliers.

Benefits

Short routes, highly efficient processes: we supply our steel bar quickly, flexibly and reliably – produced with high accuracy and tailored individually to our customers' requirements. GMH Gruppe steel bar is also notable for its good surface quality, tight dimensional tolerances, optimum chemical composition and hardenability, and good micro- and macro-cleanness.

                    
                                        Flexible solutions
                                    
                                        100% resources recycling
                                    
                                        Produced to ultra-tight dimensional tolerances

High-quality steels

There are generally fixed requirements for high-quality steels - concerning tensile strength, yield strength and formability, for example. Alloyed high-quality steels are usually not intended for quenching and tempering or for surface/case hardening. High-grade structural steels should be selected for these purposes. Typical applications: Structural steels, special sections for automotive and mechanical engineering, structural steel elements

Material No.	Name	Dimensions	Length
1.0038	S255JR	20-126mm	3-10m	Request quotation
1.0301	C10	20-126mm	3-10m	Request quotation
1.0401	C15	20-126mm	3-10m	Request quotation
1.0570	S355J2	20-126mm	3-10m	Request quotation
1.9426	SAE 1027	20-126mm	3-10m	Request quotation
in acc. with DIN EN 10060				Request quotation

Quenched and tempered (QT) steels

Quenched and tempered (QT) steels are used for components exposed to high static and dynamic loads. Non-alloy QT steels are selected for more slender dimensions and lower requirements. We supply alloyed QT steels for thicker components and higher specifications. Typical applications: Steering knuckles, Bolts, Crankshafts, Piston rods, Rotor shafts, Turbine and generator shafts

Material No.	Name	Dimensions	Length
1.1133	20Mn5	20-126mm	3-10m	Request quotation
1.1191	C45E	20-126mm	3-10m	Request quotation
1.1206	C50E	20-126mm	3-10m	Request quotation
1.1234	70MnVS4 / 75Mn4	20-126mm	3-10m	Request quotation
1.5094	38MnS6	20-126mm	3-10m	Request quotation
1.5511	35B2	20-126mm	3-10m	Request quotation
1.5531	30MnB5	20-126mm	3-10m	Request quotation
1.6580	30CrNiMo8	20-126mm	3-10m	Request quotation
1.7038	37CrS4	20-126mm	3-10m	Request quotation
1.7182	27MnCrB5-2	20-126mm	3-10m	Request quotation
1.7213	25CrMoS4	20-126mm	3-10m	Request quotation
1.7225	42CrMo4	20-126mm	3-10m	Request quotation
1.7228	50CrMo4	20-126mm	3-10m	Request quotation
in acc. with DIN EN 10060

Case-hardening steel (gear steel)

Case-hardening steels are used wherever a combination of different properties is needed. This is achieved via the use of steels with a relatively low carbon content. Case-hardening steels are ideal for use in gearing and gearwheel engineering. Typical applications: Gearing, Couplings/clutches, Shafts Gearwheels

Material No.	Name	Dimensions	Length
1.5919	15CrNi6	20-126mm	3-10m	Request quotation
1.6523	20NiCrMo2-2	20-126mm	3-10m	Request quotation
1.6571	20NiCrMoS6-4	20-126mm	3-10m	Request quotation
1.6587	18CrNiMo7-6	20-126mm	3-10m	Request quotation
1.7016	17Cr3	20-126mm	3-10m	Request quotation
1.7121	20CrMnS3-3	20-126mm	3-10m	Request quotation
1.7139	16MnCrS5	20-126mm	3-10m	Request quotation
1.7147	20MnCr5	20-126mm	3-10m	Request quotation
1.7151	27MnCrS5	20-126mm	3-10m	Request quotation
1.7160	16MnCrB5	20-126mm	3-10m	Request quotation
1.7264	20CrMo5	20-126mm	3-10m	Request quotation
1.7323	20MoCrS4	20-126 mm	3-10m	Request quotation
1.7325	25MoCr4	20-126mm	3-10m	Request quotation
1.8708	20MnCrNiMo6-3	20-126mm	3-10m	Request quotation
in acc. with DIN EN 10060

Rolling-element bearing steels

Rolling-element bearing steel has uniform high hardness, good wear properties and good cleanness. Rolling-element bearing steels are therefore used for their resistance to the high cyclical loads and high surface pressures to which rolling-element bearings are exposed during service. Typical applications: Ball bearings, Needle bearings, Roller bearings

Material No.	Name	Dimensions	Length
1.3505	100Cr6	20-126mm	3-10m	Request quotation
1.3520	100CrMnSi6-4	20-126mm	3-10m	Request quotation
1.3536	100CrMo7-3	20-126mm	3-10m	Request quotation
1.3537	100CrMo7-3	20-126mm	3-10m	Request quotation
1.3539	100CrMnMoSi8-4-6	20-126mm	3-10m	Request quotation
1.3533	18NiCrMo14-6	20-126mm	3-10m	Request quotation
1.6587	18CrNiMo7-6	20-126mm	3-10m	Request quotation
1.1219	C56E2	20-126mm	3-10m	Request quotation
1.1244	70Mn4	20-126mm	3-10m	Request quotation
in acc. with DIN EN 10060

Micro-alloyed steels

Micro-alloyed precipitation-hardening ferritic-pearlitic (PHFP) steels are used in components in which the required mechanical properties are achieved by means of controlled cooling from the hot-forming temperature. High-cost heat treatment after hot forming can therefore be eliminated, reducing costs significantly. Typical applications: Pistons, Crankshafts, Piston rods

Material No.	Name	Dimensions	Length
1.0603	C70S6 /C67	20-126mm	3-10m	Request quotation
1.1197	25MnV5	20-126mm	3-10m	Request quotation
1.1199	49MnVS3	20-126mm	3-10m	Request quotation
1.1243	70MnVS4 / 75Mn4	20-126mm	3-10m	Request quotation
1.1304	46MnVS6	20-126mm	3-10m	Request quotation
1.5217	20MnV6	20-126mm	3-10m	Request quotation
1.5231	38MnSiVS5	20-126mm	3-10m	Request quotation
1.5232	27MnSiVS6	20-126mm	3-10m	Request quotation
in acc. with DIN EN 10060

Chain steel

Chain steels are non-alloyed high-quality steels or alloyed high-grade structural steels which, thanks to their high strain and weldability properties, are especially suitable for welded round-link chains. Non-alloyed chain steels are usually not heat treated. Alloyed steels are supplied soft or spheroidising annealed and are quenched and tempered after working. Typical applications: Mining chains, Offshore sector, Ship's chains

Material No.	Name	Dimensions	Length
1.0208	RSt 35-2	20-126mm	3-10m	Request quotation
1.0468	15Mn3 Al	20-126mm	3-10m	Request quotation
1.0470	21Mn4 Al	20-126mm	3-10m	Request quotation
1.0495	21Mn5	20-126mm	3-10m	Request quotation
1.0412	27MnSi5	20-126mm	3-10m	Request quotation
1.6522	20NiCrMo2	20-126mm	3-10m	Request quotation
1.6527	20NiCrMo3	20-126mm	3-10m	Request quotation
1.6541	23MnNiCrMo5-2	20-126mm	3-10m	Request quotation
1.6540	23MnNiCrMo5-3	20-126mm	3-10m	Request quotation
1.6758	23MnNiMoCr5-4	20-126mm	3-10m	Request quotation
in acc. with DIN EN 10060

Are you looking for other materials, formats or lengths? Just contact us - together we'll find the right solution!

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

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GMH Competence Center

Email: sales.gmh@gmh-gruppe.de