Property 

Standard Sterling Silver

 Argentium
930 Silver

 Argentium
970 Silver

Solidus (°F / °C)

1450 / 788

1409 / 766

1522 / 828

Liquidus (°F / °C)

1635 / 891

1610 / 877

1680 / 916

Hardness - annealed

(HV/DPH)

66-76

60-70

50-60

Hardness - 1/4 hard (HV/DPH)

78-88

90-105

90

(HV/DPH)

90-100

106-120

110

(HV/DPH)

102-114 

121-135

125

Hardness - full hard

(HV/DPH)

116-130

136-148

134

(HV/DPH)

132-148

150-160

 150

Hardness - heat treated (air-cooled) (HV/DPH)

/

100-110

90-95

Hardness - heat treated (quenched) (HV/DPH)

 /

120-125

100-110

Wire ultimate tensile strength - annealed 

(N/mm² / psi)

 262-310 /

38,000-45,000

269-310 /

39,000-45,000

233 / 33,800

Wire ultimate tensile strength - 1/4 hard

(N/mm² / psi)

 317-359 /

46,000-52,000

434-476 /

63,000-69,000

236 / 34,200

Wire ultimate tensile strength - 1/2 hard 

(N/mm² / psi)

365-407 /

53,000-59,000 

503-545 /

73,000-79,000

374 / 54,200

Wire ultimate tensile strength - 3/4 hard 

(N/mm² / psi)

 414-462 /

60,000-67,000

565-607 /

82,000-88,000

486 / 70,500

Wire ultimate tensile strength - full hard  

(N/mm² / psi)

 469-517 /

68,000-75,000

 593-634 /

86,000-92,000

541 / 78,600

Wire ultimate tensile strength - spring hard 

(N/mm² / psi)

 524-572 /

76,000-83,000

 655-689 /

95,000-100,000

626 / 90,800

Wire ultimate tensile strength - heat-hardened 

(N/mm² / psi)

 /

 414-434 / 60,000-63,000

TBC

Elongation - annealed (%)

40

50

TBC

Elongation - work hardened (%)

2

2 

TBC

Ductility - annealed

(mm / inches elongation) 

12.40 / 0.49  

13.70 / 0.54 

TBC

Density

(ounces/in³ / g/cm³) 

5.46 / 9.45

5.42 / 9.38 

5.45 / 9.43

Coef. of thermal expansion

19 X 10^-6/K

34.2 X 10^-6/°F 

 19 X 10^-6/K 

34.2 X 10^-6/°F

TBC 

Conductivity (% IACS)

96

67.6

TBC