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Why CNC Machining?
Surface Finishes
CNC Machining Process
CNC Machining Materials Guide
6061 5052 2A12 7075

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Aluminum 6061 has good mechanical properties, exhibits, good weldability, and is very commonly extruded. It is one of the most common alloys of aluminum for general-purpose use.

Mechanical properties

Ultimate tensile strength:291 - 320 MPaElongation at break:12 - 17 %Yield strength:193 - 290 MPaHardness:60 HRBModulus of elasticity:68 - 74 GPa

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Aluminum 5052 is a strain hardening aluminum alloy with excellent corrosion resistance. Suitable for marine applications. Can be welded.

Mechanical properties

Ultimate tensile strength:190 - 320 MPa Yield strength:75 - 280 MPa Young's modulus(modulus of elasticity):68 - 71 GPa Elongation at break:2 - 22 % Hardness:46 - 83 HB

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Aluminum 7075-T6 (CNC) is an aerospace-grade material with excellent strength-to-weight ratio and strength and hardness comparable to steels.

Mechanical properties

Ultimate tensile strength:434 - 580 MPa Yield strength:359 - 530 MPa Young's modulus(modulus of elasticity):69 - 76 GPa Elongation at break:2 - 11 % Hardness:79-86 HRB

ABS PP HDPE PTFE PU LDPE POM PEEK PA6 PMMA PVC PC Bakelite

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ABS (CNC) has good mechanical properties and excellent impact resistance. It is commonly used to prototype parts prior to injection-molding.

Mechanical properties

Ultimate tensile strength:27.6 - 55.2 MPa Yield strength:18.5 - 51 MPa Young's modulus(modulus of elasticity):1.1 - 2.9 GPa Elongation at break:10 - 50 % Hardness:5.6 - 15.3 HV

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Teflon (CNC) - PTFE - has excellent thermal and chemical resistance and outstanding frictional and electrical properties.

Mechanical properties

Ultimate tensile strength:25 - 31 MPa Yield strength:14 - 41.4 MPa Young's modulus(modulus of elasticity):0.39 - 2.25 GPa Elongation at break:300 - 450 % Hardness:50 - 65 Shore D

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POM is the easiest to machine engineering plastic. Ideal for parts with high stiffness, low friction and very low water absorption.

Mechanical properties

Ultimate tensile strength:60 - 89.6 MPa Yield strength:48.6 - 72.4 MPa Young's modulus(modulus of elasticity):2.5 - 4 GPa Elongation at break:15 - 75 % Hardness:14.6 - 24.8 HV

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PEEK (CNC) is an engineering thermoplastic with excellent mechanical and thermal properties. Can be used to replace metal parts. Biocompatible.

Ultimate tensile strength:70.3 - 103 MPa Yield strength:87 - 95 MPa Young's modulus(modulus of elasticity):3.76 - 3.95 GPa Elongation at break:30 - 150 % Hardness:26.1 - 28.5 HV

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Nylon 6 (CNC) - PA 6 - has excellent mechanical properties, with high toughness and hardness. Susceptible to moisture absorption.

Ultimate tensile strength:64.7 - 79.1 MPa Yield strength:51.2 - 63.8 MPa Young's modulus(modulus of elasticity):1.58 - 1.97 GPa Elongation at break:200-300 % Hardness:16.4-18.1 HV

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PMMA is a transparent rigid plastic often used as a substitute for glass.

Mechanical properties

Ultimate tensile strength:55 - 83 MPa Yield strength:64 -80 MPa Young's modulus (modulus of elasticity):2.76 - 3.3 GPa Elongation at break:3 - 6.4 % Hardness:64 - 105 HRM

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PVC is the third most used plastic with all-around good mechanical properties, excellent chemical and weather resistance and good toughness.

Ultimate tensile strength:46 - 58 MPa Yield strength:53 - 58 MPa Young's modulus(modulus of elasticity):2.18 - 3.41 GPa Elongation at break:25 - 80 % Hardness:13.7 - 16.6 HV

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Polycarbonate (CNC) - PC - has excellent impact strength and good temperature resistance. Suitable for outdoor applications. Can be colored or semi-transparent.

Ultimate tensile strength:60 - 72.4 MPa Yield strength:59- 70 MPa Young's modulus(modulus of elasticity):2 - 2.44 GPa Elongation at break:50 - 120 % Hardness:17.7 - 21.7 HV

45HRC Q235 Steel CR12 Steel 3CR13 Steel GCR15 Steel 40Cr Steel
H59 H62 T2 TU2
304 303 316 316L 420 430

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Stainless steel 304L (CNC) has excellent mechanical properties and good machinability. Resistant to most environments and corrosive media.

Mechanical properties

Ultimate tensile strength:480 - 620 MPa Yield strength:190 - 310 MPa Young's modulus(modulus of elasticity):191 - 205 GPa Elongation at break:45 - 60 % Hardness:75-83 HRB

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The second most used stainless steel after 304, the general purpose austenitic stainless steel 316 has superior corrosion resistance particularly in chloride containing environments and good elevated temperature strength. The low carbon version 316L has even better corrosion resistance in welded structures.

Mechanical properties

Ultimate tensile strength:480 - 620 MPa Yield strength:170 - 310 MPa Young's modulus(modulus of elasticity):190 - 205 GPa Elongation at break:30 - 50 % Hardness:75 - 83 HRB

DT4C DT4E TC4 AZ91D
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