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Nickel 205 Grade A

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NICKEL, 205 Grade A

COMPOSITION
NICKEL, 205 Grade A

ELEMENT PERCENT
MINIMUM MAXIMUM
Nickel plus Cobalt 99.0 –
Copper – .15
Iron – .20
Manganese – .35
Carbon – .15
Magnesium .01 .08
Titanium .01 .05
Silicon – .15
Sulfur – .008

 

PHYSICAL PROPERTIES
NICKEL, 205 Grade A

HEAT TREATED CONDITION ENGLISH UNITS METRIC UNITS
Melting Range 2615-2635°F 1435-1445°C
Density .321 lb/cu in. @ 68°F 8.89 gm/cm@ 20°C
Specific Gravity 8.89 8.89
Coefficient of Thermal Expansion .000079 per °F (68-392°F) .0000146 per °C (20-200°C)
Thermal Conductivity 35 BTU/sq ft/ft/hr/°F @ 68°F .145 cal/sq cm/cm/sec/°C @ 20°C
Electrical Resistivity 57.0 Ohms circ mil per ft @ 68°F 9.5 microhm – cm @ 20°C
Electrical Conductivity 18.2% Copper IACS @ 68°F .105 megohm cm @ 20°C
Specific Heat .109 BTU/lb/°F @ 68°F .109 cal/gm/°C @ 20°C
Modulus of Elasticity (tension) 30,000 KSI 21,000 kg/sq mm
Modulus of Rigidity (torsion) 11,000 KSI 7700 kg/sq mm
Annealing Temperature 1300-1700°F 705-925°C

1 KSI equals 1,000 PSI

MECHANICAL PROPERTIES
NICKEL, 205 Grade A

For Round, Half Round and Square Wire
TEMPER TENSILE STRENGTH YIELD STRENGTH .2% Offset
KSI* nominal MPa** nominal KSI* nominal MPa** nominal
Annealed (A) 55-85 379-586 15-50 103-344
Eighth Hard (1/8H) 80-95 551-655 – –
Quarter Hard (1/4H) 70-95 482-655 – –
Half Hard to Hard 105-140 723-965 105-135 723-930
Spring 125-145 861-1000 105-135 723-930

 

MECHANICAL PROPERTIES
NICKEL, 205 Grade A

For Rolled Flat Wire other than Square

TEMPER

TENSILE STRENGTH

YIELD .2% OFFSET STRENGTH

% ELONGATION in 2″ – in 50mm

KSI* MPa** KSI* MPa**
Annealed 55-75 379-517 15-30 103-206 40-55
Spring 90-130 620-896 70-115 482-792 2-15

NICKEL, 205 Grade A