You cannot legally download this standard for free from ASTM International, but here are the legitimate channels:
While older standards like ASTM D638 (designed for plastics) were once used for composites, they proved inadequate for high-strength, anisotropic materials. ASTM D3039 was specifically developed to address the unique failure modes and gripping requirements of continuous fiber-reinforced polymers. Astm D3039 D3039m-17 Pdf
Yes. ASTM D3039 itself is for room temperature. For elevated temps, use ASTM D6484 (compression after impact) or refer to D3039 with thermal chamber modifications—but those are not part of the -17 PDF. You cannot legally download this standard for free
This standard applies to high-modulus fiber-reinforced composite materials, including those reinforced with: they proved inadequate for high-strength
The PDF recommends a minimum of five (5) valid specimens per sample condition.