Heating Bare Thermocouple Wire PtRh13 Platinum Rhodium Wire

Price Negotiable

Price: USD10-20 per meter

MOQ: 10 meters

Delivery Time: 5-18 working days after payment confirmed

Brand: OHMALLOY/OEM

Product Description

Type S B R Thermocouple Wire

Thermocouple Type	Alloy Code	Chemical Composition (%)		Recommend Long Working Temperature
		Pt (platinum)	Rh (Rhodium )
Type S	SP(Pt90Rh)	90	10	0-1300℃
	SN(Pt)	100
Type B	BP(Pt70Rh)	70	30	0-1600℃
	BN(Pt94Rh)	94	6
Type R	RP(Pt87Rh)	87	13	0-1300℃
	RN(Pt)	100

Thermocouple Type	Long Working Temperature℃	Max Short Working Temperature℃
Type S	1300	1600
Type R	1300	1600
Type B	1600	1700

Physical parameter
Item	Pt90Rh	Pt	Pt87Rh	Pt70Rh	Pt94Rh
Melting Point℃	1847	1769	1860	1927	1826
Density(g/cm3)	20.00	21.46	19.61	17.60	20.60
Weight per meter/g (Φ0.5mm)	3.93	4.21	3.82	3.45	4.04
Resistivity at 20℃/µΩ∙cm	18.9	10.4	19.6	19.0	17.5
Average temperature coefficient of resistance(0-1200℃)/(10-4/℃)	14	31	13.3	13.3	20.6
Tensile Strength/MPa	314	137	344	483	276
Elongation Rate(L0=100mm)/%	35	40	35	30	35

Temperature Tolerance
Thermocouple Type	Accuracy Grade	Testing Temperature Range/℃	Allowable Deviation/℃
Type S(Type R)	I	0-1100	+/-1
	I	1100-1600	+/-【1+(t-1100)*0.3%】
	II	0-600	+/-1.5
	II	600-1600	+/-0.25%*t
Type B	II	600-1700	+/-0.25%*t
	III	600-800	+/-4
	III	800-1700	+/-0. 5%*t
“T”is the measuring terminal temperature