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Alcryn® 2070BK BLK is designed for injection molding applications that desire faster flow and molding cycles.
Alcryn® 2070BK BLK is a black, injection moldable melt-processable rubber resin engineered for thermoplastic applications. This grade has a Shore A hardness of 68 for durability properties, as well as rubberlike elasticity.
Density: 1.14 g/cm³
Density, specific gravity: 1.14 g/cm³
Change in volume (in reference fuel B, 27°C, 168 hrs): 25%
Change in volume (in ASTM #1 oil, 100°C, 168 hrs): −17%
Change in volume (in IRM 903 oil, 100°C, 168 hrs): 19%
Change in volume (in water, 100°C, 168 hrs): 6.0%
Melt viscosity (190°C, 300 sec−1): 410 Pa·s
Tensile stress at 100% (1.90 mm): 4.20 MPa
Tensile stress at 100% (125°C, 1.90 mm): 4.40 MPa
Tensile stress at yield (1.90 mm): 8.70 MPa
Tensile stress at yield (125°C, 1.90 mm): 8.40 MPa
Tensile strength at yield (1.90 mm): 8.70 MPa
Tensile strength at yield (125°C, 1.90 mm): 8.40 MPa
Tensile strain at break (1.90 mm): 320%
Tensile strain at break (125°C, 1.90 mm): 280%
Torsion modulus (24°C, 1.9 mm): 2.3 MPa
Torsion modulus (−20°C, 1.9 mm): 10.2 MPa
Tensile set: 9%
Clash-Berg modulus (−40°C): 68.9 MPa
Tensile elongation at break (125°C, 1.90 mm): 280%
Tensile elongation at break (1.90 mm): 320%
Tear strength (Die C, 1.90 mm): 28.0 kN/m
Ductile/Brittle transition temperature: −79°C
Change in Shore hardness in air (Shore A, 125°C, 168 hrs): 2.0
Shore hardness (Shore A, 1.90 mm, compression molded): 68
Change in durometer hardness in air (Shore A, 125°C, 168 hrs): 2.0
Durometer hardness (Shore A, 1.90 mm, compression molded): 68
Compression set (24°C, 22 hrs, Method B): 14%
Compression set (100°C, 22 hrs, Method B): 64%
Compression set (24°C, 22 hrs): 14%
Compression set (100°C, 22 hrs): 64%
Taber abrasion resistance (CS-17 Wheel, 1,000 g, 1,000 cycles): 5.00 mg
Processing (melt) temp: 177°C
Primary Chemistry:
Melt-processable rubber resin
Slow injection molding cycles or low throughput
Inconsistent filling of complex or thin‑wall molds
Excessive noise and vibration transmission
Premature failure from heat, oil, ozone, or outdoor exposure
Complex rubber processing or scrap waste
Cable jacketing
Wire insulation and protective sheathing
Weather-resistant sealing profiles
Extruded sealing profiles
Seals and gaskets
Industrial elastomeric parts
Industrial tubing
Calendered and fabric coatings
Overmolded elastomeric components
Firm elastomeric sheets
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