Sandvik Bioline 4C27A Precision Wire

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Sandvik Bioline 4C27A Precision Wire
Categories:	Metal; Ferrous Metal; Stainless Steel
Material Notes:	Sandvik Bioline 4C27A is a hardenable stainless chromium steel characterized by: very good machinability high wear resistance good toughness good corrosion resistance due to addition of molybdenum Sandvik Bioline 4C27A is suitable for the manufacture of precision components like watch parts, measuring points, dental tools, precision instruments and drilled surgical needles. It is also used within the automotive industry for critical applications. Service temperature -50 to +100°C. Prolonged service at elevated temperatures causes loss of corrosion resistance and hardness when used in the hardened and tempered condition. Information provided by Sandvik ASTM 420F
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Physical Properties	Original Value	Comments

Density	7.80 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Vickers	350	HV5, 600°C-tempering temperature
	575	HV5, 100°C-tempering temperature
Tensile Strength, Ultimate	<= 800 MPa @Diameter 0.450 - 3.00 mm	annealed, coiled
	<= 800 MPa @Diameter 3.00 - 10.0 mm	annealed or annealed/ground, straight
	850 MPa @Diameter 5.00 - 8.00 mm	drawn/ground or annealed/ground , straight
	950 MPa @Diameter 0.450 - 4.00 mm	drawn, coiled
	950 MPa @Diameter 0.600 - 5.00 mm	drawn or drawn/ground, straight
Tensile Strength, Yield	450 MPa @Strain 0.2 %	d=0.45-3mm, annealed, coiled; d=3-10mm, annealed or annealed/ground, straight
	770 MPa @Strain 0.2 %	d=0.45-4mm, drawn, coiled; d=0.6-5mm, drawn or drawn/ground, straight
	650 MPa @Diameter 5.00 - 8.00 mm, Strain 0.2 %	drawn/ground or annealed/ground , straight
Elongation at Break	10 % @Diameter 0.450 - 4.00 mm	drawn, coiled
	10 % @Diameter 0.600 - 5.00 mm	drawn or drawn/ground, straight
	11 % @Diameter 5.00 - 8.00 mm	drawn/ground or annealed/ground , straight
	25 % @Diameter 3.00 - 10.0 mm	annealed or annealed/ground, straight
	25 % @Diameter 0.450 - 3.00 mm	annealed, coiled
Charpy Impact	2.50 J	100°C tempering temperature
	14.0 J	400°C tempering temperature
	37.0 J	600°C-tempering temperature

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000670 ohm-cm	cold drawn
	0.0000740 ohm-cm	heat treated

Thermal Properties	Original Value	Comments
CTE, linear	10.5 µm/m-°C @Temperature 20.0 - 100 °C	cold drawn
	11.0 µm/m-°C @Temperature 20.0 - 100 °C	heat treated
	11.0 µm/m-°C @Temperature 20.0 - 200 °C
	11.5 µm/m-°C @Temperature 20.0 - 200 °C
	11.5 µm/m-°C @Temperature 20.0 - 300 °C	cold drawn or heat treated
Maximum Service Temperature, Air	100 °C
Minimum Service Temperature, Air	-50.0 °C

Component Elements Properties	Original Value	Comments
Carbon, C	0.22 %
Chromium, Cr	<= 13 %
Iron, Fe	82.4 %	As Balance
Manganese, Mn	1.6 %
Molybdenum, Mo	<= 1.2 %
Nickel, Ni	<= 0.80 %
Phosphorus, P	<= 0.030 %
Silicon, Si	0.60 %
Sulfur, S	0.18 %

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NSANDV212 / 19106

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