Hi JM, Not sure if you picked up the message below re the core foam values. When you ahve some time I would really appreciate your advice on lamination schedules and which cores you advise for sole, deck and transom.
Compressive Strength ASTM D1621 psi 847
Compressive Modulus ASTM D1621-B psi 423
Tensile Strength ASTM C297 psi 481
Shear Strength ASTM C273 psi 445
Shear Modulus ASTM C273 psi 5519
Shear Elongation at Break ISO 1922 % 1.404
Flexural Strength ASTM D790 psi 1799
Compressive strength ASTM D1621-10 MPa average min-ave, min-min 1,43; 1,22; 1,03
Compressive modulus ASTM D1621-10 MPa average min-ave, min-min: 68: 53: 44
Tensile strength ASTM D1623 MPa average min-ave, min-min: 2,60: 1,82: 1,63
Tensile modulus ASTM D1623 MPa average min-ave, min-min: 137: 107: 94
Shear strength ASTM C273 MPa average min-ave, min-min: 1,13: 1,06: 0,92
Shear modulus ASTM C273 MPa average min-ave, min-min: 29: 25: 22
Shear elongation at break ASTM C273 % average 20
To give a general response to the other comments.
I am buying out of South Africa and have been unable to find any coosa products.
I wanted to use the Mycell80 in the stringers and ribs to save weight and rot resistance. I would be happy to use the corelite 450, it would be fractionally heavier if at all as they say 27% ligther than plywood.... so may be the same or lighter, but wider (16mm corelite450 vs 2 x 6mm ply + epoxy), which suits me. I can only buy 16mm corelite450.
The sole, front deck and transom I would like in synthetic core, but only the transom is a real must have. I have access to 20, 15 and 10mm Mycell80 and was hoping to use that on the sole and decks.
Once again, thanks to you all for your comments and advice.