MATERIALS

At CIREX, we always start with the product’s functionality. Once the functionality is clear, the product is developed further. An essential part of this is the choice of material. A good design depends entirely on the proper choice of material. It’s important to know the properties that the steel must possess. Consider, for example:

  • Mechanical properties      (hardness, tensile strength, elongation and elasticity)
  • Thermal properties            (heat resistance)
  • Chemical properties          (acid resistance and the ability to withstand corrosion)

Metallurgical specialists at CIREX will be glad to help you choose the optimum alloy for your application. Also when it comes to choosing the right chemical composition, structure, hardness, tensile strength or heat resistance.

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Surface-hardened steels

Structural components with high levels of abrasion resistance combined with a tough core. Products that are subject to conditions requiring both abrasion resistance and toughness. (For example: Shifting fingerKnitting mechanismDoor closure system.

CX no.Mat. no.SymbolSimilar toHeat treatmentProof stress Rp0,2Tensile strength (N/mm²)Elongation (%)Hardness
151.0401C15 / GS38SAE M1015Surface hardening≥ 430700-900≈ 12≥ 700 HV
9021.586014NiCr18-Surface hardening≥ 835900-1200≈ 10-
161.5919G15CrNi6SAE 3115Surface hardening≥ 6801000-1300≈ 8≥ 700 HV
9361.701515Cr3-Surface hardening≥ 440690-880≈ 11-
171.7131G16MnCr5SAE 5115Surface hardening≥ 600900-1200≈ 10≥ 700 HV
9141.732120MoCr4AISI 4118 / 4120 / 4121Surface hardening----
1.7242G16CrMo4-Surface hardening-600-800-≥ 680 HV

Hardenable and nitrided steel

Nitrided steel for components with a high abrasion resistance combined with a high tensile strength. For example: Door closure systemSprocketOilsupply bend.

CX no.Mat. no.SymbolSimilar toHeat treatmentProof stress Rp0,2Tensile strength (N/mm2)Elongation (%)Hardness
101.0503C45GS 60Refining≥ 500700-85015-25 HRc
9351.5028C30-Refining≥ 400600-750≥ 15-
9511.6220G20Mn5-Refining≥ 300500-650≥ 22-
121.658234CrNiMo6-Refining≥ 450-1150600-1350≥ 6-1222-55 HRc
9371.703437Cr4-Refining≥ 650-950750-1200≥ 3-1218-35 HRc
91.721825CrMo4-Refining≥ 600750-900≥ 10-
9101.722034CrMo4-Refining≥ 550-800700-1050≥ 6-1025-40 HRc
111.7225GS-42CrMo4AISI 4140Refining≥ 650-1250800-1350≥ 4-1022-58 HRc
111.7231G42CrMo4AISI 4140Refining≥ 650-1250800-1350≥ 4-1022-58 HRc
411.8160G51CrV4SEW 835Refining≥ 8501100-1250≥ 634-58 HRc

Tooling steel

A steel alloy characterised by a high degree of abrasion resistance and toughness. Therefore suitable for tools that must endure heavy loads. Valve bridgeRocker armShifting cylinderInjector clamp.

Mat. Nr.SymbolSimilair toHeat treatmentFeCSiMnPSCrMoNiHardness
191.2346GX38CrMoV5-1AISI H11Hardeningrest0,36-0,420,90-1,200,30-0,50< 0,030< 0,0304,80-5,501,10-1,40
9251.2361X91CrMoV18-Hardeningrest0,85-0,95< 1,0< 1,0< 0,045< 0,03017,0-19,01,0-1,3< 0,558-63 HRc
481.2363X100CrMoV5-Hardeningrest0,95-1,050,10-0,400,40-0,80< 0,030< 0,0304,80-5,500,90-1,2058-63 HRc
441.2419105WCr6-Hardeningrest1,00-1,100,15-0,300,80-1,10< 0,030< 0,0300,90-1,10≥ 60 HRc
451.2436X210CrW12AISI D6Hardeningrest2,00-2,250,10-0,400,15-0,45< 0,025< 0,02511,0-12,057-63 HRc
9051.2562142WV13-Hardeningrest1,35-1,450,15-0,300,25-0,35< 0,025< 0,0250,25-0,35≥ 60 HRc
431.2602GX165CrMoV12-Hardeningrest1,55-1,750,20-0,400,20-0,40< 0,035< 0,03511,0-12,00,50-0,7053-64 HRc
9011.271045NiCr6-Hardeningrest0,40-0,500,15-0,350,50-0,80< 0,035< 0,0351,20-1,501,50-1,8048-54 HRc
9151.272150NiCr13-Hardeningrest0,45-0,550,15-0,350,40-0,60< 0,035< 0,0350,90-1,203,00-3,5053-57 HRc
9501.3505100Cr6-Soft annealingrest0,95-1,050,15-0,300,25-0,40< 0,035< 0,0351,40-1,70< 25 HRc

stainless steel

An alloy characterised by a high degree of corrosion-resistance and toughness. Stainless steel is often used in corrosive environments. For example: Fuel tank mounting bracketRotor & statorTransport wheel.

CX no.Mat. no.SymbolSimilar toHeat treatmentProof stress Rp0,2Tensile strength (N/mm²)Elongation (%)Hardness
9471.4008GX7CrNiMo12-1AISI 410Refining≥ 440590-790≈ 15≥ 90 HRb
71.4027GX20Cr14-Refining≥ 400590-790≈ 1518-50 HRc
9571.4036GX46Cr13-Refining-750-900-15-53 HRc
221.4059GX22CrNi17-Refining600- 750800-950≈ 822-50 HRc
9411.4162X2CrMnNiN21-5-1LDX 2101®Solution annealing + quench hardening----
251.4308GX5CrNi19-10AISI 304 / CF8Solution annealing + quench hardening> 175> 440> 3075-90 HRb
341.4309GX2CrNi19-11AISI 304L / CF3Casting condition> 210440-460> 3070-80 HRb
241.4317GX4CrNi13-4-Refining> 650800-1000> 1522-30 HRc
271.4408GX5CrNiMi19-11-2AISI 316 / CF8MSolution annealing + quench hardening> 200> 450> 2075-90 HRb
281.4409GX2CrNiMi19-11-2AISI 316L / CF3MSolution annealing + quench hardening> 200> 450> 2075-90 HRb
9451.4468GX2CrNiMoN25-6-3-Casting condition> 650> 22> 92 HRb
9551.4470GX2CrNiMoN22-5-3-Normal annealing > 450680-880 > 30> 93 HRb
261.4827GX8CrNiNb19-10-Solution annealing + quench hardening> 175> 440> 2075-95 HRb
9241.4815GX8CrNiNb19-10------

Heat resistant steel

Heat-resistant steels are used in environments in which products are subject to high temperatures. Heat-resistant products retain their shape, strength and dimensions when exposed to high temperatures.

CX no.Mat. no.SymbloSimilar toHeat treatmentProof stress Rp0,2Tensile strength (N/mm²)Elongation (%)Hardness
9531.4848GX40CrNiSi25-20-Cast condition or annealed> 220> 420> 8-

Special alloys

CX no.Mat. no.SymbolSimilar toHeat treatmentProof stress Rp0,2Tensile strength (N/mm²)Elongation (%)Hardness
9631.3912Ni 36NILO® alloy 36Casting condition----
Others Invar 36 / Nilo 36Casting condition----

Nodular cast iron

Parts cast SiMo or Ni-Resist are special, heat-resistant alloys that are highly resistant to corrosive and especially hot gasses. No product deformation takes place with exposure to high temperatures. For example: Exhaust gas recirculation.

CX no.Mat. no.SymbolSimilar toHeat treatmentProof stress Rp0,2Tensile strength (N/mm²)Elongation (%)HardnessHeat resistant up*
90-GJS-X SiMo5-1-Ferritic annealing> 550> 650> 3200-270780/820 ℃
91-Ni-Resist D-5S-Stabilising annealing> 250> 450> 10131-193870/950 ℃

* Guidelines for maximum operating temperature casting / gas.

Nickel alloys

Nickel alloys are characterised by a high degree of resistance to abrasion, rust and heat. This alloy retains its shape, strength and dimensions when exposed to high temperatures. For example: NOx cover.

CX no.Mat. no.SymbolSimilar toHeat treatmentProof stress Rp0,2Tensile strength (N/mm²)Elongation (%)Hardness
732.4603NiCr30FeMoHASTELLOY® G-30® alloySoft annealing--≈ 8-
742.4856NiCr22Mo9NbINCONEL® alloy 625Zachtgloeien---< 240 HB

Cobalt alloys

Super-alloy for components requiring high abrasion resistance and corrosion resistance. These alloys are difficult to process due to their extreme hardness.

CX no.Mat. no.SymbolSimilar toHeat treatmentProof stress Rp0,2Tensile strength (N/mm²)Elongation (%)Hardness
86-GCoCr30W4STELLITE® 6Casting condition---39-43 HRc