ELECTRONIC SPACE PRODUCTS INTERNATIONAL

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MONEL ALLOY K-500

Description: Age-Hardened version of alloy 400 for increased strength and hardness, totally nonmagnetic and spark resistant.

Major Applications: Pump shafts, doctor-blades and scrapers, oil well tools and instruments, electronic components, springs, valve trim, fasteners and marine propeller shafts._(B)

Analysis in Weight Percent:

              Ni (+ Co)             63.0 min                             Cu                        27.0 - 33.0

              Fe                        2.0                                      Mn                       1.5

              Si                         0.5                                      S                          0.01 

              Al                        2.30 - 3.15                         Ti                         0.35 - 0.85

Mechanical Properties (at Room Temperature):

                                                                                      MPa                    ksi

Ultimate Tensile Strength:                                         1100                    160

Yield Strength (0.2% offset):                                     790                      115

                                                                                      GPa                     10⁶ psi

Elastic Modulus (Tension):                                        180                      26

Elongation in 50mm (2 in): 20%

Hardness: 300 HB

Physical Properties (at Room Temperature):

                                                                                      ^oC                                      ^oF 

Melting Point/Range:                                                  1315 - 1350                       2400 - 2460

Curie Temperature:                                                    -134                                   -210

                                                                                      J/kg ⋅ K                             Btu/lb ⋅ ^oF

Specific Heat:                                                              419                                     0.100

                                                                                      µm/m ⋅ K                           µin/in ⋅ ^oF

Average Coefficient of Thermal Expansion:            13.7                                    7.6

                                                                                      W/m ⋅ K                            Btu ⋅ in/ft² ⋅ h ⋅ ^oF

Thermal Conductivity:                                               17.5                                    121

Electrical Resistivity (nΩ ⋅ m): 615

Density (g/cm³): 8.44

Corrosion Resistance: _(A)

Sulfuric Acid:                   1                                                                                    Hydrochloric Acid:          2

Hydrofluoric Acid:          1                                                                                    Phosphoric Acid:             1

Nitric Acid:                       3                                                                                    Organic Acid:                   1

Alkalies:                            1                                                                                    Salts:                                 1

Seawater:                          1                                                                                    Chlorine Cracking:          1

High Temp. Resistance (1000 ^oF): _(A)

Oxidation:                                                                    3

Carburization:                                                             3

High Temperature Strength and Stability:              3

ASTM(B) ASME (SB):    ---

ASME Boiler Code:         Code Cases 1192, N-119

SAE AMS:                        4676

UNS:                                  N05500

(A) 1 - Good to excellent; 2 - Acceptable; 3 - Not Recommended.

(B) This column is provided for your convenience, ESPI cannot and does not make recommendations of type or grade of material for end use. Proper selection of material for proposed end use is our customer's responsibility.