HP PA 12 parts have a gray surface. The layers are sintered tightly, so the finished products have high abrasion resistance and do not split. The material retains its strength with sharp variations in temperature and on exposure to ultraviolet radiation.
Powder melting point (DSC) | +187°C / +369°F |
Particle size | 60 µm |
Bulk density of powder | 0.425 g/cu cm |
Density of parts | 1.01 g/cu cm |
Products made from HP PA 12 retain their durability even if they are in contact with chemicals for a prolonged period. The material retains its properties when interacting with water, lubricants, solvents, petrol, and alkaline products.
There are almost no pores in the material, so it does not need epoxy resins to be made water-resistant. Sealed containers and pipelines are printed from it, capable of withstanding liquid pressure up to 20 atm.
Products made of polyamide are denser than water; therefore, even after immersion in water for 24 hours, they absorb no more than 5% of their own weight.
Liquid | Resistance |
---|---|
Diluted alkaloids | ●●●●● |
Concentrated alkaloids | ●●●●● |
Hot water | ●●●○○ |
Chlorine salts | ●●●●● |
Alcohol | ●●●●● |
Esters | ●●●●● |
Ethers | ●●●●● |
Ketones | ●●●●● |
Aliphatic hydrocarbons (including gasoline components) | ●●●●● |
Motor oil | ●●●●● |
Aromatic hydrocarbons | ●●●●● |
Toluene | ●●●●● |
Unleaded gasoline | ●●●●● |
DOT 3 brake fluid | ●●●●● |
Chlorinated hydrocarbons | ●●●○○ |
Trichloroethylene | ●●●○○ |
*According to HP Development Company, L.P.
Hewlett Packard polyamide is free of heavy metals, carcinogenic PAHs, phthalates, and bisphenol A, so products can get in contact with skin. Its biocompatibility is USP Class I–VI certified, and its content of hazardous substances is certified by RoHS and REACH, Ingredient Safety Statement, and PAHs Certificate.
UL 94 and UL 746A documents certify that polyamide is suitable for products that are not exposed to open flame. The material retains its strength even when heated to +120°C.
HP PA 12 is environmentally friendly. It does not need special storage and disposal conditions.
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