Hydroxyapatite (HA)

Verifiedceramic
· HA· HAp· Ca₁₀(PO₄)₆(OH)₂

Hydroxyapatite (HA) is a calcium phosphate ceramic with a chemical composition that closely mimics the mineral phase of natural bone and tooth enamel, making it biocompatible and osteoconductive. It is the primary ceramic material in orthopedic and dental applications, where it is used as a coating on metal implants, in bone scaffolds, and as a standalone filler to promote bone regeneration and integration with living tissue. Engineers select HA over purely metallic alternatives because its chemical similarity to bone reduces inflammation and accelerates osseointegration, though its brittle nature and lower fracture toughness compared to metals typically restrict it to non-load-bearing roles or composite reinforcement.

orthopedic implants and coatingsdental restorations and implantsbone tissue scaffolds and fillersbiomedical device coatingsmaxillofacial reconstructioncomposite bone cements

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Compressive Strength(σc)
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Pa——
Flexural Strength (MOR)(σf)
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Pa——
Fracture Toughness(KIC)
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Pa·√m——
Hardness (Vickers)(HV)
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HV——
Young's Modulus(E)
—
Panotes—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Melting Point / Solidus(Tm)
—
K——
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
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kg/m³——
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.