Molex® #13
Hot Work Tool Steel
Molex #13 is a versatile hot work steel that can be widely used in various hot and cold work tooling applications. The combination of good red hardness and abrasion resistance, with the ability to resist heat checking makes this a popular work horse tool steel. It can withstand drastic cooling from high operating temperatures. Consider this when specifications call out for AISI H-13 tool steel.
Molex #13 is a 5% Chrome, High Vanadium Hot Work Tool Steel that is commonly regarded as “The most forgiving hot work die steel”. You cannot find a more universally accepted tool steel to provide resistance to thermal shock (readily stands up to tool temperatures up to 1000°F).
Typical applications include: extrusion dies, hot shear blades, plastic mold cavities and hot forging dies.
Features
Typical Surface Condition*
- Ground Top and Bottom – (+.015”/+.035” oversize)
- Sides Saw Cut – (+1/8”)
- Length Saw Cut – (+1/8” oversize)
- Surface Finish – RMS 125 or better
*As delivered (pre-machined condition)
Applications
Available Sizes*
- 1/4″ *
- 5/16″ *
- 3/8″ *
- 7/16″ *
- 1/2″ *
- 9/16″ *
- 5/8″ *
- 11/16″ *
- 3/4″ *
- 13/16″ *
- 7/8″ *
- 15/16″
- 1″
- 1-1/8″
- 1-3/16″
- 1-1/4″
- 1-5/16″
- 1-3/8″
- 1-7/16″
- 1-1/2″
- 1-9/16″
- 1-5/8″
- 1-11/16″
- 1-3/4″
- 1-7/8″
- 1-15/16″
- 2″
- 2-1/8″
- 2-3/16″
- 2-1/4″
- 2-3/8″
- 2-7/16″
- 2-1/2″
- 2-9/16″
- 2-5/8″
- 2-11/16″
- 2-3/4″
- 2-15/16″
- 3″
- 3-1/4″
- 3-3/8″
- 3-7/16″
- 3-1/2″
- 3-3/4″
- 3-15/16″
- 4″
- 4-3/16″
- 4-7/16″
- 4-1/2″
- 5″
- 5-1/2″
- 6″
- 3/4″ *
- 7/8″ *
- 1″ *
- 1-1/8″
- 1-1/4″
- 1-3/8″
- 1-1/2″
- 1-5/8″
- 1-3/4″
- 1-7/8″
- 2″
- 2-1/4″
- 2-3/8″
- 2-1/2″
- 2-3/4″
- 3″
- 3-1/4″
- 3-7/16″
- 3-1/2″
- 3-3/4″
- 3-7/8″
- 4″
- 4-1/4″
- 4-7/16″
- 4-1/2″
- 4-3/4″
- 5″
- 5-1/2″
- 6″
- 6-1/2″
- 6-3/4″
*Certain Sizes may have modified analysis relative to production requirements.
Lengths
10/12 Ft. R/L, 20/24 Ft. R/L and Custom Cuts
Typical Straightness Standard
Pump Shaft Straightness ONLY = .005″ in the first 5 feet, plus .0015″ for each additional foot. We take extra precautions to protect small diameter bars with longer lengths but straightness is perishable.
Typical Diameter Tolerances
| Up to 1-1/2” Round | (+.000″/-.001″) |
| Over 1-1/2” to 3-1/2” Round | (+.000″/-.002″) |
| Over 3-1/2” to 4-1/2” Round | (+.000″/-.003″) |
| Over 4-1/2” to 5-1/2” Round | (+.000″/-.004″) |
| Over 5-1/2” and Above | Call for Details |
Applications
Consider Mir 50®
Well-known as the “4340 of the stainless world”. It offers excellent serviceability in the pulp & paper, petrochemical, energy, wastewater and food processing industries.