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Top rated specialty metal raw materials
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Best overall
McMaster-Carr 8975K353 316 Stainless Steel Sheet, 12" x 12", 0.125" Thick
High corrosion resistance, excellent durability, and precise dimensions make it ideal for industrial fabrication and chemical environments.
- Superior corrosion resistance
- Precise thickness and flatness
- Versatile for many applications
- Expensive compared to carbon steel
- Heavy for thin sections
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Best value
Online Metals 6061 Aluminum Sheet, 12" x 12", 0.125" Thick
Lightweight, strong, and easy to machine; widely used in automotive, aerospace, and DIY projects.
- Lightweight yet strong
- Good machinability
- Affordable price
- Not as corrosion resistant as stainless
- Prone to scratching
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Best budget pick
Speedy Metals 1018 Cold Rolled Steel Sheet, 12" x 12", 0.125" Thick
Machineable, weldable, and consistent properties make it a go-to for general fabrication and prototyping.
- Budget-friendly
- Easy to machine and weld
- Readily available
- Prone to rust without coating
- Lower strength than alloys
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Best for precision parts
SmallParts 304 Stainless Steel Round Rod, 1/4" Diameter x 12" Long
Excellent corrosion resistance and good strength; commonly used for fasteners, shafts, and medical devices.
- High corrosion resistance
- Good strength-to-weight ratio
- Easy to clean
- Harder to machine than 303
- Can be brittle if cold worked
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Best for high strength
Midwest Steel 4140 Alloy Steel Plate, 6" x 6", 0.25" Thick
Through-hardening, high tensile strength, and toughness ideal for gears, shafts, and structural components.
- High tensile strength
- Good wear resistance
- Heat treatable
- Requires heat treatment for full properties
- More expensive than 1018
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Best for aerospace applications
McMaster-Carr 8982K11 2024 Aluminum Sheet, 12" x 12", 0.063" Thick
High strength-to-weight ratio and fatigue resistance; commonly used in aircraft structures and high-performance components.
- Excellent strength-to-weight ratio
- Good fatigue resistance
- Machinable in annealed state
- Corrosion prone without cladding
- Not weldable
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Best for machinability
Online Metals 360 Brass Sheet, 6" x 6", 0.125" Thick
Excellent machinability, corrosion resistance, and attractive appearance for decorative and functional parts.
- Superb machinability
- Good corrosion resistance
- Aesthetic golden color
- Heavier than aluminum
- Less strong than steel
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Best for electrical conductivity
Speedy Metals C110 Copper Sheet, 12" x 12", 0.032" Thick
Exceptional electrical and thermal conductivity; widely used in electrical components, heat sinks, and roofing.
- Highest electrical conductivity among common metals
- Good thermal conductivity
- Easy to solder and form
- Soft and easy to scratch
- Tarnishes over time
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Best for tubing applications
Midwest Steel 4130 Chromoly Steel Tube, 1" OD x 0.065" Wall x 12" Long
High strength, toughness, and weldability; standard for racing cages, bicycle frames, and aircraft structures.
- High strength-to-weight ratio
- Excellent weldability
- Good toughness
- Requires careful heat treatment
- More expensive than mild steel
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Best for high strength and corrosion resistance
SmallParts 17-4 PH Stainless Steel Sheet, 6" x 6", 0.0625" Thick
Precipitation-hardening stainless providing high strength, hardness, and corrosion resistance for demanding applications.
- Very high strength
- Good corrosion resistance
- Heat treatable to high hardness
- Hard to machine after hardening
- Expensive