PROPERTY VALUES AND RECOMMENDED ASTM TEST METHODS
UNAGEDAFTER OVEN AGING 2/
CLASSGRADEHardness, maximum Shore-A- Durometer ASTM D 2240Tensile strength, minimum MPa (psi) ASTM D 412Elongation minimum %
ASTM D 412
Tear resistance, minimum kN/m (ppi) ASTM D 624Compression set, maximum
% 1/
ASTM D 395
Hardness change maximum durometer ASTM D 2240Tensile strength change, maximum % ASTM D 412 & ASTM D 573Elongation change, maximum % ASTM D 412
ASTM D 573
1A &
1B
4040 ± 54.83 (700)250-35± 15-30-50
5050 ± 54.83 (700)225-35± 15-30-50
6060 ± 54.48 (650)175-35± 15-30-50
7070 ± 54.14 (600)150-40± 15-30-50
8080 ± 53.45 (500)125-45± 15-30-50
2A &
2B
2525 + 5, -104.83 (700)400-35-2A
25-2B
± 10-20-40
4040 ± 54.83 (700)240-35-2A
25-2B
± 10-20-40
5050 ± 54.83 (700)200-35-2A
25-2B
± 10-20-40
6060 ± 54.48 (650)150-2A
100-2B
-40-2A
25-2B
± 10-20-40
7070 ± 54.48 (650)125-2A
80-2B
-40-2A
25-2B
± 10-25-40
8080 ± 54.48 (650)100-2A
60-2B
-45-2A
30-2B
± 10-25-40
3A3030 +5, -105.86 (850)50014.00 (80)40+10-25-25
5050 ± 58.28 (1,200)50030.63 (175)40+10-40-50
6060 ± 57.59 (1,100)40026.25 (150)40+10-35-35
3B3030 ± 56.90 (1,000)50026.25 (150)25± 5-20-35
5050 ± 58.28 (1,200)50026.25 (150)20± 10-25-30
6060 ± 58.28 (1,200)40026.25 (150)25± 10-30-35
7070 ± 57.59 (1,100)35026.25 (150)25± 10-30-45
8080 ± 55.52 (800)20012.25 (70)40± 10-25-40
1/ Aging period shall be: Class 1A – 22 hours at 100ºC (212ºF)
Classes 1B, 2A, 2B – 70 hours at 150ºC (302ºF)
Classes 3A, 3B – 70 hours at 100ºC (212ºF)
2/ After oven aging: Classes 1A, 1B, 2A, 2B – 70 hours at 225ºC (437ºF)
Classes 3A, 3B – 70 hours at 200ºC (392ºF)
PROPERTY VALUES AND RECOMMENDED ASTM TEST METHODS
LOW TEMPERATURE REQUIREMENTSAFTER WATER IMMERSIONS 4/OTHER REQUIREMENTS
CLASSGRADEBrittle point, minimum ºC (ºF) 3/
ASTM D 2137
Torsional stiffness Ratio hours at
-75ºC,
maximum ratio ASTM D 1053
Volume change, maximum percent
ASTM D 471
Flex resistance, (crack growth), cycles 5/ ASTM D 813Specific gravity ASTM D 297
Variation from pre-production rate
Impact resilience, minimum percent
ASTM D 2632
1A & 1B40-75 (-103)15--± 0.03-
50-75 (-103)15--± 0.03-
60, 70, 80-75 (-103)15--± 0.03-
2A & 2B25, 40-62.2 (-80)-+10-± 0.03-
50-62.2 (-80)-+5-± 0.03-
60-62.2 (-80)-+5-± 0.03-
70-62.2 (-80)-+5-± 0.03-
80-62.2 (-80)-+5-± 0.03-
3A30-90 (-130)15+540,000± 0.03-
50-90 (-130)15+510,000± 0.03-
60-90 (-130)15+510,000± 0.03-
3B30-70 (-94)-+5500,000± 0.0340
50-70 (-94)-+5140,000± 0.0345
60-70 (-94)-+550,000± 0.0335
70-70 (-94)-+52,500± 0.0335
80-70 (-94)-+5-± 0.0335
3/ All test specimens shall not fail after single-impact blow, at the temperature specified.
4/ 70 hours at 100ºC (212ºF)
5/ No specimen shall show a crack in excess of 1/2 inch in length when flexed the specified number of cycles.