HAYNES® alloy 188

HAYNES-Alloy-188

Shaped, Flat, Square, Round, Fine Wire, Plated and Un-plated AMS 5608, AMS 5772, AMS 5801, PWA 1042, GE B50TF59-S4

HAYNES® 188 OR ALLOY 188 DESCRIPTION WIRE DESCRIPTION

Alloy 188 is a cobalt-nickel-chromium-tungsten super alloy combining excellent high-temperature strength with very good resistance to oxidizing environments up to 2100°F (1095°C). It is readily fabricated and formed by
conventional techniques.

CHEMISTRY TYPICAL

Nickel: 20.00-24.00
Chromium: 20.00-24.00
Tungsten: 13.00-16.00
Iron: 3.00 max
Cobalt: Balance
Lanthanum: 0.02-0.12
Boron: 0.015 max
Carbon: 0.05-0.15
Manganese: 1.25max
Silicon: 0.2-0.5
Phosphorus: 0.02 max
Sulfur: 0.015 max

APPLICATIONS

Seal rings for gas turbine.
Packing for gas turbines

PROPERTIES TEMPERED

Alloy 188 can be cold rolled to achieve the temper properties required by specific customers and/or manufacturing requirements. Contact Ulbrich Wire for details.

PHYSICAL PROPERTIES

Density, 0.324 lbs/in³, 8.98 g/cm³

Electrical Resistivity: µohm-in, (µohm-cm)
400°F (200°C): 41.5(105.0)
800°F (400°C): 43.8(110.5)
1000°F (600°C): 44.7(114.8)
1200°F (700°C): 45.6(116.4)
1400°F (800°C): 46.1(117.5)
1600°F (900°C): 46.5(118.3)
1800°F (1000°C): 46.7(119.1)

Mean Coefficient of Thermal Expansion: µin/in-°F (µm/m-°C)
70-800°F (20-500°C): 7.8(14.5)
70-1000°F (20-600°C): 8.2(15.2)
70-1200°F (20-700°C): 8.6(15.8)
70-1400°F (20-800°C): 9.0(16.5)
70-1600°F (20-900°C): 9.4(17.1)
70-1800°F (20-1000°C): 9.9(17.9)

Thermal Conductivity: BTU-in/ft-°F (W/m-°K)
800°F (400°C): 125(17.5)
1000°F (600°C): 138(21.1)
1200°F (700°C): 152(23.0)
1400°F (800°C): 167(24.8)
1600°F (900°C): 174(25.5)
1800°F (1000°C): 189(27.6)
Modulus of Elasticity: KSI (MPa)
33.6 x 10³(23.2 x 10³) in tension

Melting Range: 2400-2570°F (1315-1410°C)

MECHANICAL PROPERTIES AT ROOM TEMPERATURE

PROPERTIES: ANNEALED (TYPICAL)

Ultimate Tensile Strength: 130 KSI min (896 MPa min)

Yield Strength (0.2% offset): 60 KSI min (414 MPa min)

Elongation: 45% min
Hot Tensile 1200°F (Typical)

Ultimate Tensile Strength: 90 KSI min (620 MPa min)

Yield Strength (0.2% offset): 35 KSI min (243 MPa min):

Elongation:
Gauges up to 0.020 inches: 35% min
Gauges over 0.020 inches: 20% min

ADDITIONAL PROPERTIES

CORROSION RESISTANCE

Refer to NACE (National Association of Corrosion Engineers) for recommendations.

STANDARD WIRE FINISHES

Extra Clean: (XC) Extra clean is also referred to as “bright annealed” or “bright annealed and cold rolled”

Grease (round wire only): Drawn in a heavy grease produces an “Ultra bright” finish for decorative applications

Soap (round wire only): Soap is used as a lubricant in the drawing process and is not removed. It acts as a lubricant during customer part forming operation.

A soap finish is available in tempered products.

Plated: Many plating options are available.
∗Special finishes are available: Contact Ulbrich Wire Sales with special finish and plating requests.

FORMS

Continuous Coils
Cut to lengths
Precision cutting

WELDING

For best results refer to: SSINA’s “Welding of Stainless Steels and Other Joining Methods”

*Haynes® Alloy 188 is a registered trademark of Haynes Alloys