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Page 1 of 6 © 2002 Weir Slurry Group. All rights reserved Document Number A102

Page 1 of 6 © 2002 Weir Slurry Group. All rights reserved Document Number A102 Application Data Material Guide • EnviroTech Pumpsystems leads the slurry pump industry by offering an extremely broad range of abrasion and corrosion resistant materials speciﬁcally formulated to meet customer needs. A critical part of any successful pump application is the correct selection of the materials of construction. • The suspended particles in slurry cause abrasive wear on pump components due to a combination of impact and sliding action. Physical characteristics of the abrasive slurry include size, shape, density, angularity and hardness of the suspended solids. • Alloys with good corrosion resistance usually have low wear resistance. Abrasive slurries with corrosives signﬁcantly increase the wear rate of these metal alloys. • Material selection should be based on: temperature, particle size, oil & chemical resistance and peripheral speed limitations. Elastomers exhibit exceptional wear and corrosion resistance while being cost effective. Speciﬁc elastomers are selected in the majority of applications where the particle size is below 1/4 inch and the temperature is within the limit of the appropriate elastomer. Elastomer Chart Physical properties based on laboratory control test data obtained in accordance with ASTM Standards, Section 9. Actual results may vary. This data does not constitute a warranty or guarantee and is merely presented for the purpose of illustrating typical properties. Elastomer Number Elastomer Type Color Speciﬁc Gravity Durometer (Shore A) Bashore Resilience (%) Maximum Temperature o F ASTM D1418 Designation 500 Natural Rubber Black 1.04 47 70 180 NR 505 Natural Rubber Gray 1.03 52 68 180 NR 510 Natural Rubber Tan 1.00 42 73 180 NR 516 Natural Rubber White 1.00 40 70 150 NR 520 Natural Rubber Black 1.09 55 60 180 NR 525 Natural Rubber Black 1.24 65 — 150 NR 535 Neoprene Black 1.41 70 — 212 CR 545 Neoprene Black 1.44 60 — 250 CR 548 Neoprene White 1.35 60 — 212 CR 556 Hypalon* Black 1.25 70 — 250 CSM 566 Urethane Blue 1.08 82 62 180 EU 567 EDPM Black 1.11 70 — 250 EDPM 570, 575 Butyl Black 1.17 70 — 250 IIR 580, 585 Nitrile Black 1.17 65 — 250 NBR 582 Nitrile Black 1.19 65 — 212 NBR 599 Viton* Black 1.82 70 — 350 FPM *trademark of Dupont Home Page 2 of 6 Document Number A102 Application Data Description Applications 500 Natural Rubber (Black) A carbon ﬁlled natural rubber. Has better tear resistance and slightly better chemical resistance than pure gum at the sacriﬁce of some wear- resistance. Excellent impact type abrasion resistance. Has impeller tip speed limitation of 5300 fpm. Hardness: 47 Durometer (Shore A) Temperature Limitation: 180 o F Excellent general purpose compound used in industrial and mining applications. Resistant to moderate chemical, acids, bases and alcohols. Attacked by ozone and strong acids. Will swell in the presence of fats, oils, greases and most hydrocarbons. 505 Natural Rubber (Gray) Best combination of high hardness and resilience. Good resistance to impinging type abrasion equal to “pure gum” 510 compound. Hardness: 52 Durometer (Shore A) Temperature limitations 180 o F Excellent for high abrasion applications in mining and gravel industries. Good wear resistance when pumping occosional large particles. Resistant to moderate chemicals, acids, bases, and alcohols. Attacked by ozone and strong acids. Will swell in the presence of fats, oils, greases and most hydrocarbons. 510 Gum Rubber (Tan) Highest quality, most resilient pure gum rubber available. Best wear-resistant elastomer available with the highest impact resistance for particles up to.25” in size. Has impeller tip speed limitation of 5000 fpm. Hardness: 42 Durometer (Shore A) Temperature limitations 180 o F Elastomer of choice for high abrasion applications found in mining and gravel applications. Resistant to moderate chemicals, acids, bases, and alcohols. Attacked by ozone and strong acids. Will swell in the presence of fats, oils, greases and most hydrocarbons. 516 Natural Rubber (White) Food grade natural rubber suitable for use where purity and color contamination is a concern. Hardness: 40 Durometer (Shore A) Temperature limitations 150 o F Excellent general purpose compound used in industrial and mining applications. Resistant to moderate chemicals, acids, bases, and alcohols. Attacked by ozone and strong acids. Will swell in the presence of fats, oils, greases and most hydrocarbons. 520 Natural Rubber (Black) A carbon and silica ﬁlled natural rubber. Has better tear resistance and slightly better chemical resistance than pur gum at sacriﬁce of some abrasion resistance. Has better impeller tip speed limitation of 5500 fps. Hardness: 55 Durometer (Shore A) Temperature limitations 180 o F Excellent general purpose compound used in industrial and mining applications. Resistant to moderate chemicals, acids, bases, and alcohols. Attacked by ozone and strong acids. Will swell in the presence of fats, oils, greases and most hydrocarbons. Home Page 3 of 6 Document Number A102 Application Data 525 Natural Rubber (Black) A carbon black and graphite ﬁlled natural rubber for improved chemical resistance at the sacriﬁce of some abrasion resistance. Has impeller tip speed limitation of 5500 fps. Hardness: 65 Durometer (Shore A) Temperature limitations 150 o F Compounded to handle chlorine applications. Has good wear-resistance. Resistant to moderate chemicals, acids, bases, and alcohols. Will swell in the presence of fats, oils, greases and most hydrocarbons. 535 Neoprene (Black) Harder neoprene compound formulated for handlay parts only. Has good oil, chemical, temperature and abrasion resistance. Contains mineral ﬁller and can be sparked tested to insure complete metal coverage. Hardness: 70 Durometer (Shore A) Temperature limitations 212 o F Used in pulp and paper, chemical, mining and general industrial applications on vertical pump length parts. Effective in higher temperature applications where oils are present. 545 Neoprene (Black) Highest quality neoprene. Processed with a lead cure giving excellent resistance to water swelling. Has good oil, chemical and temperature resistance and excellent wear resistance. High modulus material has tear strength capable of sustaining impeller tip speeds up to 65oo fpm. Hardness: 60 Durometer (Shore A) Temperature limitations 250 o F Used in ﬂotation and moly circuits with success. Has shown excellent balance between abrasion and oil resistance in tar sands and oil shale duty. Excellent for pulp and paper applications where oils are used as ﬂotation agents. 548 Neoprene (White) Food grade neoprene suitable for use where oil and temperature resistance, purity and color contamination is a concern. Hardness: 60 Durometer (Shore A) Temperature limitations 212 o F Elastomer of choice for food or pharmaceutical applications involving oils or higher temperatures. Food applications should be review by materials laboratory before quotation. 556 Hypalon (Black) Resistant to heat, ozone, weathering and oxidizing chemicals. Good with strong acids and bases at room temperature. Has excellent impermeability to gases. Good to fair abrasion resistance. Hardness: 70 Durometer (Shore A) Temperature limitations 250 o F Used in chemical and industrial applications that are driven primarily by chemical resistance criteria 566 Urethane (Blue) An MDI non-”moca” urethane. Tough, wear- resistant elastomer, best with smaller fraction solids. Outstanding sliding-type abrasion resistance. Good oil resistance with lower water absorption than TDI “moca” urethanes. Best at temperatures below 140 o F. Impeller tip speeds up to 5800 fpm. Hardness: 82 Durometer (Shore A) Temperature limitations 160 o F Used in moly and ﬂotation circuits with good success. Effective in solvent exchange process (SX) and in FGD applications handling gypsum and limestone slurries. Urethane can be considered best suited for the application zone between natural rubber and hard metal alloys. 567 EPDM (Black) Excellent corrosion resistance to acids and alkalis. Good resistance to swelling in polar solvents such as MEK or chlorinated solvents. High resistance to environmental attack with low permeability to gases. Moderate wear-resistance. Attacked by petroleum solvents, coal tar solvents and aromatic hydrocarbons. Hardness: 70 Durometer (Shore A) Temperature limitations 250 o F Used in chemical, pulp and paper, and industrial applications that are driven primarily by chemical resistance criteria. Description Applications Home Page 4 of 6 Document Number A102 Application Data 570 575 Butyl (Black) High resistance to environmental attack and low permeability to gases. Attacked by petroleum solvents, coal tar solvents and aromatic hydrocarbons. Fair to poor abrasion resistance. Hardness: 70 Durometer (Shore A) Temperature limitations 250 o F Used in chemical, power utility, pulp and paper and industrial applications that are driven primarily by chemical resistance criteria. 580 582 585 Nitrile (Black) Superior oil resistance. Performs well in presence of fats, oils, greases and hydrocarbons. Good high temperature performance with fair wear-resistance. Elastomer 582 for handlay components only. Hardness: 65 Durometer (Shore A) Temperature limitations 250 o F Used successfully in hydrocarbon, petrochemical, oil and gas drilling and synfuel applications. Has potential for tar sands and oil shale duty. 599 Viton (Black) Expensive elastomer with broad spectrum chemical and solvent resistance. High temperature capability with poor resistance to abrasion. Hardness: 70 Durometer (Shore A) Temperature limitations 350 o F Used in chemical, oil and industrial duties that are driven by chemical resistance criteria. Consult factory before using.. Description Applications Home Page 5 of 6 Document Number A102 Application Data Metals Chart Description Applications uploads/Geographie/ a102-material-guide.pdf