Material Comparisons

Pyrathane® Material Comparisons

	Best All-Around Materials				Materials For Special Applications
Designation	83A	88A	92A	70A	83ASD	83AUV	90ASD	92AX
Recommended Initial Stretch	10%	10%	7.5%	15%	12.5%	12.5%	7.5%	5%
Shore A Hardness (ASTM D 2240 or ISO 868)	85±3	88±3	92±3	70±3	82±3	85±3	90±3	92±3
Ultimate Tensile Strength In PSI (ASTM D 412 or ISO 527)	5000	6000	6000	3100	4300	5500	3800	4400
Ultimate Elongation in % (ASTM D 412)	500	500	450	765	670	500	450	Not Available
Tensile Stress In PSI (ASTM D 412 or ISO 527) At 100% Elongation At 300% Elongation	775 1700	950 2,300	1600 3500	440 690	740 1160	800 1200	1200 2200	at 5% - 400 at 10% - 600
Tear Strength, Die "C" in lbf/in (ASTM D 624, 646 or ISO 34-1)	500	600	775	380	370	500	Not Available	560
Temperature Range	-10° to +150° F (-23.3° to +65.6° C)							-40° to +200° F (-40° to +93.3° C)
Advantages	High co-efficient of friction, excellent flex life and abrasion resistance	Higher torque carrying capacity, higher abrasion resistance and higher modulus	Higher torque carrying capacity and higher modulus	Lively rubber-like properties	Static dissipative	Resistance to ultraviolet light and very high humidity	Permanently static dissipative (independent of humidity level) and ultra-clean (low off-gassing, low contamination)	Greater temp range and wider chemical resistivity
Disadvantages (relative to our 83A material)	-	Lower coefficient of friction	Shorter flex life and lower co-efficient of friction	Lower torque carrying capacity and abrasion resistance	Slightly lower modulus and abrasion resistance	Slightly lower modulus and lower tensile strength	Slightly lower tensile strength	Poor abrasion resistance
FDA Compliance	1680 & 2600				-	-	-	1680

We find that in most applications the 83A Pyrathane® is most suitable because of its high co-efficient of friction, excellent flex life and reasonable cost. However, in special applications where static dissipation, ultraviolet light resistance, softer feel or higher co-efficient of friction are required one of our other materials may be more suitable.

This data is provided for general information and material comparison. The potential user should perform tests to determine the product's performance and suitability in the intended application. Final determination of the fitness of the product for any particular use is the responsibility of the buyer.