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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Case Hardening Steel

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. nr.SymbolSimilar toHeat treatmentProof stress Rp0,2 (N/mm²)Tensile strenght (N/mm²)Elongation (%)Hardness
151.0401C15 / GS38SAE M1015Case-hardened≥ 430700-900≈ 12≥ 700 HV
9021.586014NiCr18Carburizing
161.5919G15CrNi6SAE 3115 Case-hardened ≥ 6801000-1300≈ 8≥ 700 HV
9361.701515Cr3 Case-hardened ≥ 440690-880≈ 11≈ 174 HB
171.7131G16MnCr5SAE 5115 Case-hardened ≥ 600800-1100≈ 10≥ 700 HV

Construction Steel

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

CX no.Mat. Nr.SymbolSimilar toHeat treatmentProof stress Rp0,2 (N/mm²)Tensile strenght (N/mm²)Elongation (%)Hardness
101.0503C45GS 60Quench & temper≥ 550≥ 700≥ 815-25 HRC
9351.5028C30Soft annealing≥ 260≥ 520≥ 1880-100 HRB
9511.6220G20Mn5 Quench & temper ≥ 300≥ 500≥ 22150-195 HB
121.658234CrNiMo6 Quench & temper ≥ 950≥ 1100≥ 634-40 HRC
9371.703437Cr4 Quench & temper ≥ 650≥ 750≥ 12≥ 20 HRC
91.721825CrMo4 Quench & temper ≥ 600≥ 750≥ 10≤ 20 HRC
9101.722034CrMo4 Quench & temper ≥ 700≥ 850≥ 10≤ 25 HRC
111.7225GS42CrMo4AISI 4140 Quench & temper ≥ 800≥ 900≥ 927-34 HRC

Tool Steel

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

CX no.Mat. Nr.SymbolSimilar toHeat treatmentProof stress Rp0,2 (N/mm²)Tensile strength (N/mm²)Elongation (%)Hardness
191.2346GX38CrMoV5-1AISI H11Tempering≥ 950≥ 1100≥ 432-40 HRC
9251.2361X91CrMoV18Soft annealing≤ 30 HRC
481.2363X100CrMoV5Hardened58-63 HRC
441.2419105WCr6 Hardened ≈ 65 HRC
451.2436X210CrW12AISI D6Quench & temper≥ 57 HRC
9051.2562142WV13Hardened ≈ 265 HB
431.2602GX165CrMoV12 Quench & temper≥ 55 HRC
9011.271045NiCr6 Quench & temper≥ 48 HRC
9151.272150NiCr13 Quench & temper≥ 53 HRC
9501.3505100Cr6Soft annealing≤ 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. Nr.SymbolSimilar toHeat treatmentProof stress Rp0,2 (N/mm²)Tensile strength (N/mm²)Elongation (%)Hardness
9471.4008GX7CrNiMo12-1AISI 410Quench & temper≥ 440≥ 590≥ 15≥ 90 HRB
71.4027GX20Cr14DIN 17445 / SEW 410 Quench & temper ≥ 400≥ 590≥ 1590-100 HRB
9571.4036GX46Cr13 Quench & temper 49-53 HRC
221.4059GX22CrNi17SEW 410 Quench & temper ≥ 750≥ 800≥ 822-30 HRC
9411.4162X2CrMnNiN21-5-1LDX 2101®Solution annealing & quench
251.4308GX5CrNi19-10AISI 304 / CF8As cast≥ 175≥ 440≥ 3075-90 HRB
341.4309GX2CrNi19-11AISI 304L / CF3 As cast ≥ 210440-460≥ 3070-80 HRB
241.4317GX4CrNi13-4 Quench & temper ≥ 650800-1000≥ 1522-30 HRC
271.4408GX5CrNiMo19-11-2AISI 316 / CF8M As cast ≥ 200≥ 450≥ 2075-90 HRB
281.4409GX2CrNiMo19-11-2AISI 316L / CF3M As cast ≥ 200≥ 450≥ 2075-90 HRB
9451.4468GX2CrNiMoN25-6-3 As cast ≥ 650≥ 22≥ 92 HRB
9551.4470GX2CrNiMoN22-5-3Normalized≥ 450680-880≥ 30≥ 93 HRB
261.4827GX8CrNiNb19-10Solution annealing & quench≥ 175≥ 440≥ 2075-90 HRB
9241.4815GX8CrNi19-10AISI 304As cast≥ 450≥ 2070-90 HRB

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. Nr.SymbolSimilar toHeat treatmentProof stress Rp0,2 (N/mm²)Tensile strength (N/mm²)Elongation (%)Hardness
9531.4848GX40CrNiSi25-20SEW 595 / EN 10295As cast≥ 220≥ 450≥ 8150-220 HB

Special Alloys

CX no.Mat. Nr.SymbolSimilar toHeat treatmentProof stress Rp0,2 (N/mm²)Tensile strength (N/mm²)Elongation (%)Hardness
1.4460GX8CrNiMo27-5AISI 329 / DuplexQuench≈ 710≈ 1491-99 HRB
1.4462GX2CrNiMoN22-5-3ASTM A240 / DuplexNormalized680-880≥ 30≥ 93 HRB

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. Nr.SymbolSimilar toHeat treatmentProof stress Rp0,2 (N/mm²)Tensile strength (N/mm²)Elongation (%)Hardness
90 GJS-XSiMo5-1Ferritic annealing ≥ 550 ≥ 650 ≥ 3200-270 HB
91 Ni-ResistD-5SStabilizing ≥ 250 ≥ 450 ≥ 10131-193 HB

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. Nr.SymbolSimilar toHeat treatmentProof stress Rp0,2 (N/mm²)Tensile strength (N/mm²)Elongation (%)Hardness
732.4603NiCr30FeMoHASTELLOY® G-30® alloyAs cast≈ 8
742.4856NiCr22Mo9NbINCONEL® alloy 625Soft annealing≤ 240 HB
As cast≥ 275≥ 485≥ 25
9631.3912Ni36NILO® alloy 36 / Invar 36 As cast ≈ 210≈ 500≥ 20≈ 80 HRB
1.3981NiCo29-18NILO K / Kovar As cast ≈ 80 HRB
1.4462GX2CrNiMoN22-5-3ASTM A240 / DuplexNormalized680-880≥ 30≈ 93 HRB

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. Nr.SymbolSimilar toHeat treatmentProof stress Rp0,2 (N/mm²)Tensile strength (N/mm²)Elongation (%)Hardness
86GCoCr30W4STELLITE® 6As cast≥ 75037-43 HRC