SnPb

ceramic

· JVASP-39081· SnPb

SnPb is a tin-lead alloy system traditionally used in solder compositions for electronic assembly and plumbing applications. This material is notable as a legacy solder standard, though its use has been heavily restricted in electronics manufacturing due to lead's environmental and health concerns; it remains relevant in specific applications where lead-containing solders are still permitted or required, such as certain aerospace and military contexts. Engineers may select SnPb formulations where existing equipment, process compatibility, or regulatory exemptions favor lead-bearing solders over lead-free alternatives.

electronic solder jointsplumbing and water systemsaerospace/military electronicsthermal management in legacy systemscompatibility with copper substratescost-constrained manufacturing

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3278	lb/in³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.0000275	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000208	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	0.4967	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.5233	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.04990	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	0.04988	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

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.

SnPb — Properties & Data | MatWorld

SnPb

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental