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CU-NI 90/10 WASHERS

Parmar Steel offers a comprehensive range of copper-nickel fasteners, including CU-NI 90/10 washers, known for their exceptional corrosion resistance and durability in marine environments. These washers are crafted with precision using high-quality CU-NI 90/10 alloy, ensuring superior performance in challenging conditions. Ideal for use in seawater applications, they effectively withstand erosion and biofouling, making them a preferred choice in shipbuilding, offshore oil platforms, and desalination plants. Parmar Steel commitment to stringent quality standards ensures that each washer delivers reliability and longevity, meeting industry specifications effortlessly. Whether for new installations or maintenance projects, these washers provide peace of mind, ensuring secure fastening and protection against galvanic corrosion, thereby extending the lifespan of critical components.

Grade	Copper Nickel Cu-Ni 90/10 - (UNS C70600), Cu-Ni 70/30 - (UNS C71500)
Standard	ASTM / ASME SB 151, SB 152
Range	M10 TO M100
Length	UPTO 5 METERS
Surface Coating	Hot Dipped Galvanizing Copper Nickel Fasteners, Phosphate Copper Nickel Fasteners, Teflon Copper Nickel Fasteners, Ptfe Coated Copper Nickel Fasteners, Xylon Copper Nickel Fasteners, Zinc Copper Nickel Fasteners, Cadmium Copper Nickel Fasteners

CU-NI 90/10 HEAD HEX BOLTS SIZE IN MM

Copper Nickel 70/30 Bolt Type	SIZE	PROPERTY CLASS	TENSILE STRENGTH	STANDARD
Copper Nickel 70/30 Hex Head Bolt / Screws	M4 to M80	10.9	1040N / mm2 min	ISO 4017 (Full Thread) ISO 4014 (Half Thread)

Screws Type	SIZE	GRADE	ASME	ISO	ASTM
Socket Head Cap Screws	M1.6 to M64	12.9	B18.3.1 M	4762	A574M
Socket Low Head Cap Screws	M4 to M20	10.9
Socket Head Shoulder Screws	M6 to M24	012.9	B18.3.3M
Countersunk Socket Head Screws	M3 to M20	012.9	B18.3.5M	10642	F835M
Button Head Socket Screws	M3 to M12	012.9	B18.3.4M	7380	F835M
Flange Button Head Socket Screws	M3 to M10	012.9			F835M
Knurled Point Socket Set Screws	M3 to M20	45H	B18.3.6M	4029	F912M
Flat Point Socket Set Screws	M6 to M12	45H	B18.3.6M	4026	F912M
Dog Point Socket Set Screws	M3 to M20	45H	B18.3.6M	4028	F912M
Cone Point Socket Set Screws	M3 to M12	45H	B18.3.6M	4027	F912M
Plain Point Socket Set Screws	M3 to M20	45H	B18.3.6M	4029	F912M
Taper Pressure Plug	M8 to M22	–

CU-NI 90/10 HEX HEAD NUT WEIGHT CHART

Property	Minimum Value (S.I.)	Maximum Value (S.I.)	Units (S.I.)	Minimum Value (Imp.)	Maximum Value (Imp.)	Units (Imp.)
Atomic Volume (average)	0.0071	0.0073	m3/kmol	433.268	445.473	in3/kmol
Density	8.5	8.95	Mg/m3	530.638	558.731	lb/ft3
Energy Content	140	180	MJ/kg	15167.4	19501	kcal/lb
Bulk Modulus	130	170	GPa	18.8549	24.6564	106 psi
Compressive Strength	85	550	MPa	12.3282	79.7708	ksi
Ductility	0.03	0.44		0.03	0.44
Elastic Limit	85	550	MPa	12.3282	79.7708	ksi
Endurance Limit	138	240	MPa	20.0152	34.809	ksi
Fracture Toughness	26	79	MPa.m1/2	23.6612	71.8937	ksi.in1/2
Hardness	580	1650	MPa	84.1219	239.312	ksi
Loss Coefficient	1.5e-005	0.00056		1.5e-005	0.00056
Modulus of Rupture	85	550	MPa	12.3282	79.7708	ksi
Poisson's Ratio	0.34	0.35		0.34	0.35
Shear Modulus	45	58	GPa	6.5267	8.41219	106 psi
Tensile Strength	267	624	MPa	38.7251	90.5036	ksi
Young's Modulus	120	156	GPa	17.4045	22.6259	106 psi
Glass Temperature			K			°F
Latent Heat of Fusion	220	240	kJ/kg	94.5825	103.181	BTU/lb
Maximum Service Temperature	425	480	K	305.33	404.33	°F
Melting Point	1384	1508	K	2031.53	2254.73	°F
Minimum Service Temperature	0	0	K	-459.67	-459.67	°F
Specific Heat	384	386	J/kg.K	0.297162	0.298709	BTU/lb.F
Thermal Conductivity	19	66	W/m.K	35.5686	123.554	BTU.ft/h.ft2.F
Thermal Expansion	16	17	10-6/K	28.8	30.6	10-6/°F
Breakdown Potential			MV/m			V/mil
Dielectric Constant
Resistivity	11.7	36.3	10-8 ohm.m	11.7	36.3	10-8 ohm.m

COPPER NICKEL 90/10 BOLTS AND NUTS CHEMICAL STRUCTURE

Grade	Cu	Mn	Pb	Ni	Fe	Zn
Cu-Ni 90-10	88.6 min	1.0 max	.05 max	9-11 max	1.8 max	1 max

CUPRO NICKEL 90/10 FLAT WASHER MECHANICAL BEHAVIOUR

Element	Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
Copper Nickel 90-10	0.323 lb/in3 at 68 F	2260 F	50000 psi	20000 psi	30 %

CU-NI 90/10 HEX HEAD NUT EQUIVALENT MATERIAL

STANDARD	WERKSTOFF NR.	UNS
Specifications	2.0872	C70600
Size	2.0882	C71500

We Shine For Premier Quality Product

The company has over two decade long record of servicing customers in India as well as all over the world. The company attaches significant emphasis on ensuring adherence to quality standards at all levels.

The basic thrust of the quality philosophy is summed up in the company's Quality Policy which serves as the bench mark of all functions executed by the company. Strict quality assurance system is being followed in all our departments and Total Quality Management is applied to streamline and all the procedures and practices in operation to achieve high standard of efficiency.