Product Details, Specifications, and Technical Information
See Cold Roll Steel Tolerances
It's a metal variety box filled with a mixture of different shapes, sizes, and weights in the metal of your choice. Designed with prototyping, testing, and tinkering in mind, most pieces in the Protobox are smaller than 12" x 6". Each Protobox is different, based on the materials available at the time your box is packed.

Dimension Name | Specification |
Alloy | 1018 |
Production Method | 0 |
MTR Availability | No |
Material | Carbon Steel |
Shape | Protobox |
Custom Cut Warehouse | 0 |
Ships In | Limit Two Per Customer |
Weight/Lineal Foot | ||
20.0 pounds |
Please note that this data is to be used ONLY FOR REFERENCE, NOT FOR DESIGN, and by using it,you agree that any decisions you make regarding materials for your project are at your own discretion.
Mechanical Properties | |
Property | Value |
Brinell Hardness 500 kg ball | 126 |
Rockwell Hardness B scale | 71 |
Elongation Typical % | 15 |
Density g/cm^3 | 7 |
Melting Point °F | 2590 - 2670 |
Modulus of Elasticity KSI x 10^3 | 29 |
Reduction of Area % | 40 |
Specific Heat BTU/lb-°F (32-212F) | 1 |
Thermal Conductivity BTU-in/hr-ft^2-°F | 360 |
Tensile Strength KSI | 70 |
Yield Strength KSI | 58 |
Shear Strength KSI | 43 |
Rockwell Hardness (for ball only) C Scale | 60 min |
Chemistry Information: 1018 Carbon Steel | |
Element | Percentage |
C | 0.14 - 0.2 |
Fe | 98.81 - 99.26 |
Mn | 0.6 - 0.9 |
P | 0.04 max |
S | 0.05 max |