XP251S quasi-isotropic laminate

Verifiedcomposite

· XP251S laminate· XP251S — E-glass fabric / epoxy

Engineered laminate of XP251S, stacked quasi-isotropic. Properties here are laminate-level effective values in the laminate's own axes — not the lamina constants, which live on the parent prepreg (XP251S — E-glass fabric / epoxy). From MIL-HDBK-17-2F Volume 2 (US Government work, public domain).

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Compliance & Regulations

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

XP251S — E-glass fabric / epoxy/XP251S quasi-isotropic laminate

Units:

si imperial

30 interactive curves for this material

Stress-strain, S-N fatigue and environmental knockdown curves are free with an account.

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Environment

Direction

Property	Value	Unit	Conditions
Poisson's Ratio(ν)2 entries	Curve (11 pts)	-	24°C · RTA · 12-axis · Balanced 45 degree laminate, Quasi-isotropic (8 plies total) · Balanced 45 degree laminate, Quasi-isotropic (8 plies total)
↳	Curve (6 pts)	-	24°C · RTA · 12-axis · Balanced 45 degree laminate, Quasi-isotropic (8 plies total) · Balanced 45 degree laminate, Quasi-isotropic (8 plies total)
Stress–Strain Curve(σ–ε)	—	ksi	28 entriesClick to expand

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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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.

XP251S quasi-isotropic laminate

Mechanical Properties

Regulatory Screening

Environmental