Mechanical Properties of CP GR2

Guaranteed Room Temperature Minimum

Typical Strength (%RT) & Ductility 200F 400 F 600F 800F 1000F

Ultimate Tensile Strength, psi

50,000

80 57 46 36 28

Yield Strength, 0.2% Offset, psi

40,000

76 46 30 26 20

El in 2"(>0.025" thick), pct

22

42 37 25 31

Reduction of Area, Percent

35

57 76 76 75

Bend Radius

2T 2.5T

Weld Bend Radius

Approx. 3-4T

Hardness

Brinell 200

Physical Properties for CP GR2

Modulus of Elasticity, psi(10^6) Tension

14.9

Modulus of Elasticity, psi(10^6) Torsion

Approximately 6.5

Density, lb/ cu Inch

0.163

Melting Range, Deg. F

3000 - 3100F

Specific Electrical Resistivity micro ohms/cm/sq cm

56

Specific Heat, Btu/lb/Deg. F

0.125 at room temperature

Thermal Conductivity, Btu/hr.Ft^2 - Deg. F/ft

Approx. 9.5 at room temp.

Mean Coefficient of Thermal Expansion Per F (10^6)32-212F32-600F32-1000F32-1200F32-1500F

4.85.15.45.65.6

Oxidation Characteristics in Air

400 F 600 F 800 F 1000F

Short Time

Good Good Good Moderate

Long Term

Good Good Slight Moderate

Remarks on Fabrication for CP GR2

Beta Transus

1650 - 1700

Cutting

Readily cut with saw or abrasive wheel

Machining

Rigid set-up, medium speed, heavy feed, sharp tools, adequate coolant

Forming

Readily formable at room temp. Complex shapes require heat

Joining, Welding

Complex weldable, fusion welding requires protection

 Remarks on Heat Treatment for CP GR2 & CP GR4

Initial Forging

Approx. 1650F rough breakdown finish 1550F

Annealing

1300F, 2hr, air cool

Solution Treating

Not applicable

Aging

Not applicable

Stress Relief Annealing

900 - 1000F, 45 min.

 Other Technical Data for CP GR2

Principal Uses

Airframe applications, skins, chemical industry, applications where maximum formability required with moderate strength.

Available Forms

Sheet, strip, plate, bar, billet, wire, tubing, extrusions.

Nominal Composition

0.08% max C, 0.05% max N, 0.015% max H (sheet), 0.20% max Fe.

Type Structure

Alpha