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Strength and Toughness

Strength is not the same as Toughness

For example, glass has a high Tensile Strength, but it's not tough, because it shatters easily. Toughness relates to Impact Resistance.

Strength is needed in structural applications. With Plastics, as strength decreases, toughness often increases. This Table is for comparison only.

Plastic Type Tensile Strength Impact Resistance
PBI (Polybenzimidazole) 100 50
PAI (Polyamide-imide) 86 60
PEEK 79 45
PEI (Polyetherimide) 75 50
PETP 64 20
Nylon 66 64 90
PSU (Polysulphone) 57 50
Nylon GSM (MoS2 filled) 56 80
PETP TX 54 20
Nylon 6 54 95
PPS (Polyphenylene Sulphide) 54 50
Nylon 6 Oil Filled 50 70
Acetal Copolymer 49 70
PC (Polycarbonate) 45 100
Acrylic 43 20
Orkot (Marine) 43 90
PVC 39 20
PVDF (Polyviylidenefluoride) 36 100
PP (Polypropylene) 24 100
HMWPE (PE500) 20 100
PTFE (Virgin) 20 55
HDPE (Pipe Grade PE100) 17 100
HDPE (PE300) 16 60
UHMWPE (Fender) 16 100
UHMWPE (7000) 14 100