Sandvik Sanicro 75X Spring Wire

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Sandvik Sanicro 75X Spring Wire
Categories:	Metal; Ferrous Metal; Alloy Steel
Material Notes:	Sanicro 75X is an austenitic precipitation hardening nickel alloy with good spring properties up to 600°C (1110 F) and good resistance to gas corrosion at high temperature. The maximum service temperature is dependent on as delivered condition and heat treatment. A- Annealed 730°C (1 350°F) / 16 h Air cooling B- Soft drawn, final reduction 1 5 % (No 1 temper) 730°C (1 350°F) / 16 h Air cooling C- Hard drawn, final reduction 65 % (Spring temper), 1150°C (2 100°F) / 2 h, 840 °C (1 540°F) / 24 h, 700 °C (1 300°F) / 24 h, Air cooling after all steps D Hard drawn, final reduction 65 % (Spring temper) 650 °C (1 200°F) / 4h Air-cooling Information provided by Sandvik
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Physical Properties	Metric	English	Comments

Density	8.30 g/cc	0.300 lb/in³

Mechanical Properties	Metric	English	Comments
Tensile Strength	800 MPa	116000 psi	Annealed
	1000 MPa	145000 psi	Soft drawn, final reduction 15% (No 1 temper)
	1100 MPa	160000 psi	Hard drawn, final reduction 65% (Spring temper), after heat treatment
	1200 MPa	174000 psi	Annealed, after heat treatment
	1350 MPa	196000 psi	Soft drawn, final reduction 15% (No 1 temper), after heat treatment
	1600 MPa	232000 psi	Hard drawn, final reduction 65% (Spring temper)
	1850 MPa	268000 psi	Hard drawn, final reduction 65% (Spring temper), after heat treatment
Tensile Strength, Yield	400 MPa @Strain 0.2 %	58000 psi @Strain 0.2 %	Annealed
	650 MPa @Strain 0.2 %	94300 psi @Strain 0.2 %	Hard drawn, final reduction 65% (Spring temper), after heat treatment
	800 MPa @Strain 0.2 %	116000 psi @Strain 0.2 %	Annealed, after heat treatment
	800 MPa @Strain 0.2 %	116000 psi @Strain 0.2 %	Soft drawn, final reduction 15% (No 1 temper)
	1150 MPa @Strain 0.2 %	167000 psi @Strain 0.2 %	Soft drawn, final reduction 15% (No 1 temper), after heat treatment
	1500 MPa @Strain 0.2 %	218000 psi @Strain 0.2 %	Hard drawn, final reduction 65% (Spring temper)
	1750 MPa @Strain 0.2 %	254000 psi @Strain 0.2 %	Hard drawn, final reduction 65% (Spring temper), after heat treatment
Elongation at Break	2.0 %	2.0 %	Hard drawn, final reduction 65% (Spring temper)
	20 %	20 %	Soft drawn, final reduction 15% (No 1 temper)
	34 %	34 %	Annealed
Modulus of Elasticity	180 GPa	26100 ksi	Hard drawn, final reduction 65% (Spring temper)
	193 GPa	28000 ksi	Annealed
	193 GPa	28000 ksi	Soft drawn, final reduction 15% (No 1 temper)
	211 GPa	30600 ksi	Hard drawn, final reduction 65% (Spring temper), after heat treatment
	216 GPa	31300 ksi	Annealed, after heat treatment
	220 GPa	31900 ksi	Soft drawn, final reduction 15% (No 1 temper), after heat treatment
	221 GPa	32100 ksi	Hard drawn, final reduction 65% (Spring temper), after heat treatment
Poissons Ratio	0.29	0.29	Hard drawn, final reduction 65% (Spring temper); Calculated
	0.29	0.29	Hard drawn, final reduction 65% (Spring temper), after heat treatment; Calculated
	0.29	0.29	Soft drawn, final reduction 15% (No 1 temper), after heat treatment; Calculated
	0.30	0.30	Soft drawn, final reduction 15% (No 1 temper); Calculated
	0.30	0.30	Annealed; Calculated
	0.30	0.30	Annealed, after heat treatment; Calculated
Shear Modulus	70.0 GPa	10200 ksi	Hard drawn, final reduction 65% (Spring temper)
	74.0 GPa	10700 ksi	Annealed
	74.0 GPa	10700 ksi	Soft drawn, final reduction 15% (No 1 temper)
	81.5 GPa	11800 ksi	Hard drawn, final reduction 65% (Spring temper), after heat treatment
	81.5 GPa	11800 ksi	Hard drawn, final reduction 65% (Spring temper), after heat treatment
	83.0 GPa	12000 ksi	Annealed, after heat treatment
	85.0 GPa	12300 ksi	Soft drawn, final reduction 15% (No 1 temper), after heat treatment
Shear Strength	170 MPa @Temperature 540 - 570 °C	24700 psi @Temperature 1000 - 1060 °F	Classification A, B
	205 MPa @Temperature 620 - 650 °C	29700 psi @Temperature 1150 - 1200 °F	Classification C
	275 MPa @Temperature 510 - 540 °C	39900 psi @Temperature 950 - 1000 °F	Classification A, B
	275 MPa @Temperature 590 - 620 °C	39900 psi @Temperature 1090 - 1150 °F	Classification C
	310 MPa @Temperature 480 - 510 °C	45000 psi @Temperature 896 - 950 °F	Classification A, B
	345 MPa @Temperature 450 - 480 °C	50000 psi @Temperature 842 - 896 °F	Classification A, B
	345 MPa @Temperature 540 - 590 °C	50000 psi @Temperature 1000 - 1090 °F	Classification C
	380 MPa @Temperature -260 - 540 °C	55100 psi @Temperature -436 - 1000 °F	Classification C
	415 MPa @Temperature 430 - 450 °C	60200 psi @Temperature 806 - 842 °F	Classification A, B
	480 MPa @Temperature -260 - 430 °C	69600 psi @Temperature -436 - 806 °F	Classification A, B
	585 MPa @Temperature 320 - 370 °C	84800 psi @Temperature 608 - 698 °F	Classification D
	620 MPa @Temperature 260 - 320 °C	89900 psi @Temperature 500 - 608 °F	Classification D
	690 MPa @Temperature <=260 °C	100000 psi @Temperature <=500 °F	Classification D

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000120 ohm-cm @Temperature 20.0 °C	0.0000120 ohm-cm @Temperature 68.0 °F
	0.0000125 ohm-cm @Temperature 100 °C	0.0000125 ohm-cm @Temperature 212 °F
	0.0000125 ohm-cm @Temperature 200 °C	0.0000125 ohm-cm @Temperature 392 °F
	0.0000125 ohm-cm @Temperature 300 °C	0.0000125 ohm-cm @Temperature 572 °F
	0.0000130 ohm-cm @Temperature 500 °C	0.0000130 ohm-cm @Temperature 932 °F
	0.0000130 ohm-cm @Temperature 700 °C	0.0000130 ohm-cm @Temperature 1290 °F

Thermal Properties	Metric	English	Comments
CTE, linear	12.2 µm/m-°C @Temperature 30.0 - 100 °C	6.78 µin/in-°F @Temperature 86.0 - 212 °F
	13.4 µm/m-°C @Temperature 30.0 - 300 °C	7.44 µin/in-°F @Temperature 86.0 - 572 °F
	13.8 µm/m-°C @Temperature 30.0 - 500 °C	7.67 µin/in-°F @Temperature 86.0 - 932 °F
	14.9 µm/m-°C @Temperature 30.0 - 700 °C	8.28 µin/in-°F @Temperature 86.0 - 1290 °F
	16.5 µm/m-°C @Temperature 30.0 - 900 °C	9.17 µin/in-°F @Temperature 86.0 - 1650 °F
Specific Heat Capacity	0.420 - 0.460 J/g-°C @Temperature 20.0 - 100 °C	0.100 - 0.110 BTU/lb-°F @Temperature 68.0 - 212 °F
	0.540 J/g-°C @Temperature 50.0 - 900 °C	0.129 BTU/lb-°F @Temperature 122 - 1650 °F
Thermal Conductivity	16.3 W/m-K @Temperature 100 °C	113 BTU-in/hr-ft²-°F @Temperature 212 °F
	19.8 W/m-K @Temperature 300 °C	137 BTU-in/hr-ft²-°F @Temperature 572 °F
	25.6 W/m-K @Temperature 500 °C	178 BTU-in/hr-ft²-°F @Temperature 932 °F
	30.2 W/m-K @Temperature 700 °C	210 BTU-in/hr-ft²-°F @Temperature 1290 °F
	37.2 W/m-K @Temperature 900 °C	258 BTU-in/hr-ft²-°F @Temperature 1650 °F
Maximum Service Temperature, Air	600 °C	1110 °F

Component Elements Properties	Metric	English	Comments
Carbon, C	<= 0.030 %	<= 0.030 %
Chromium, Cr	16 %	16 %
Manganese, Mn	0.50 %	0.50 %
Nickel, Ni	72 %	72 %
Phosphorus, P	<= 0.015 %	<= 0.015 %
Silicon, Si	>= 0.30 %	>= 0.30 %
Sulfur, S	<= 0.015 %	<= 0.015 %

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NSANDV5269 / 199833

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