Material Comparisons

Pyrathane® Material Comparisons

	Best All-Around Materials		Materials For Special Applications
Designation	83A	92A	88A	83AUV	83ASD	70A	92AX
Recommended Initial Stretch	10%	7.5%	10%	12.5%	12.5%	15%	5%
Shore A Hardness ASTM D 2240	85±3	93±4	88 +/-3	85±3	82±3	72±4	92±3
Ultimate Tensile Strength In PSI ASTM D 412	5000	6500	6000	5500	4300	3580	4350 ASTM D 638
Ultimate Elongation % ASTM D 412	500	500	450	500	670	700	550 ASTM D 638
Tensile Modulus In PSI ASTM D 412 At 100% Elongation At 300% Elongation	750 1700	1550 3600	1000 2,500	700 1100	740 1160	500 800	ASTM D 638 at 5% 340 at 10% 530
Tear Strength ASTM D 624 / PLI Die "C"	500	550	600	500	370	380	580 ASTM D 1004
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 and higher modulus	Higher torque carrying capacity, higher abrasion resistance and higher modulus	Resistance to Ultra Violet light and very high humidity	Static dissipative	Lively rubber-like properties	Greater temp range and wider chemical resistivity
Disadvantages (relative to our 83A material)	-	Shorter flex life and lower co-efficient of friction	Lower coefficient of friction	Slightly lower modulus and abrasion resistance	Slightly lower modulus and lower tensile strength	Lower torque carrying capacity and abrasion resistance	Poor abrasion resistance
FDA Compliance	1680 & 2600	-	1680 & 2600	-	-	-	2600

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.