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Nitrided Cylinders
We offer a wide range of nitrided cylinders.
Hardened Cylinders
We offer a wide range of hardened cylinders for small diameters.
Bimetallic Cylinders
Top grade of our solutions and commenly used are our bimetallic cylinders.
The advantage of our bimetallic alloys
The advantage of our bimetallic alloys is the high and homogeneous hardness throughout the whole layer thickness which ranges from 1.5 to 2 mm thickness. The lifetime increase of the bimetallic cylinder against a nitrided cylinder may exceed 12 times or more. The price-quality-lifetime ratio is therefore very beneficial for the bimetallic cylinder. We have five different alloy solutions listed in the table below. We qualified the quality of the different alloys according abrasion and or corrosion resistance to enable a quick selection.
The advantage of our nitrided and hardened cylinders
The nitrided cylinder obtains its wear resistance from a thin hard top layer of 0.3-0.4 mm applied by gas treatment, which is sufficient for standard polymers without fillers and has a good lifetime price ratio. For specific cases with small diameters, hardened materials can also be used.
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DIN standard
Material
Type steel
Treatment
Hardness
Abrasion resistance
(x good) to (xxxxx excellent)Corrosion resistance
(x good) to (xxxxx excellent) -
1.850941CrAIMo7Nitriding steelNitrided>850 HV1++
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1.851931CrMoV9Nitriding steelNitrided>700 HV1++
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1.855034CrAINi7Nitriding steelNitrided>850 HV1++
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1.2379X155CrVMo121Hardening steelHardened59 - 63 HRC+++++
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-KPM1Hardening steel PMHardened58 - 63 HRC++++++++
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-KPM2Hardening steel PMHardened55 - 60 HRC+++++++++
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Din standard1.8509
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Material41CrAIMo7
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Type steelNitriding steel
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TreatmentNitrided
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Hardness>850 HV1
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Abrasion resistance+
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Corrosion resistance+
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Din standard1.8519
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Material31CrMoV9
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Type steelNitriding steel
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TreatmentNitrided
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Hardness>700 HV1
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Abrasion resistance+
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Corrosion resistance+
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Din standard1.8550
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Material34CrAINi7
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Type steelNitriding steel
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TreatmentNitrided
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Hardness>850 HV1
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Abrasion resistance+
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Corrosion resistance+
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Din standard1.2379
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MaterialX155CrVMo121
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Type steelHardening steel
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TreatmentHardened
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Hardness59 - 63 HRC
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Abrasion resistance+++
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Corrosion resistance++
Bimetallic alloys table
We qualified the quality of the different alloys according abrasion and or corrosion resistance to enable a quick selection.
KB100/109 are general purpose alloys and KB300/350 are alloys for heavy wear applications. See also our material selector.
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Type
Alloy
Alloy components
Hardness [HRC]
(a) Hardness of matrix, tungsten carbides have a hardness of 89 HRC.Abrasion resistance
(x good) to (xxxxx excellent)Corrosion resistance
(x good) to (xxxxx excellent) -
KB 100FeNi - C - B58 - 65+++ -
KB 109Fe - CrNi - Mo - Cu - C - B64 - 69++++++ -
KB 200Ni - CoCr - Mo - B48 - 56++++++ -
KB 300NiCr - Ni - Co - B - W60 - 66 (a)++++++++ -
KB 350NiCr - Si - B - W60 - 66 (a)+++++++++
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TypeKB 100
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AlloyFe
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Alloy componentsNi - C - B
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Hardness [HRC]58 - 65
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Abrasion resistance++
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Corrosion resistance+
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TypeKB 109
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AlloyFe - Cr
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Alloy componentsNi - Mo - Cu - C - B
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Hardness [HRC]64 - 69
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Abrasion resistance+++
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Corrosion resistance+++
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TypeKB 200
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AlloyNi - Co
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Alloy componentsCr - Mo - B
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Hardness [HRC]48 - 56
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Abrasion resistance+
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Corrosion resistance+++++
Backing material table
Like 5 different bimetallic alloys, we also working with different backingmaterials. The selection for the right backing material is made on internal process pressure and cylinder design. The different material options garantee a flawless use of the cylinder.
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Type
Yield point at 300°C
Application
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KB 25250 N/mm2Extrusion
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KB 37370 N/mm2Extrusion
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KB 63630 N/mm2Injection
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KB 13130 N/mm2Extrusion
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KB 48480 N/mm2Extrusion & Injection
Example Cylinders
Nitrided Cylinder
Contact us-
Layer1,8509
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Alloy componentsCr - Al - Ni
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Hardness [HRC]950-1100 Hv (65-67 Hrc)
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Diameter [mm]Ø 55
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Abrasion resistance+
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Corrosion resistance+
Bimetallic Cylinder KB100/109
Contact us-
LayerKB109
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Alloy componentsFe - Cr
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Hardness [HRC]64 - 69
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Diameter [mm]Ø 200
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Abrasion resistance+++
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Corrosion resistance+++
Bimetallic Cylinder KB300/350
Contact us-
LayerKB350
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Alloy componentsNi - Tungsten carbide
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Hardness [HRC]60 - 66
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Diameter [mm]]Ø 150
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Abrasion resistance+++++
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Corrosion resistance++++
Discover more products
Other products for injection and extrusion can be found below by clicking on the pictures more information is shown.
