News - 304 stainless steel 4.5*0.3 mm capillary tube

Chemical Composition of Stainless Steel 304

Table 1. Chemical composition for 304 stainless steel alloys

%	304	304L	304H
C	0.0 – 0.07	0.0 – 0.03	0.04 – 0.08
Mn	0.0 – 2.0	0.0 – 2.00	0.0 – 2.0
Si	0.0 – 1.00	0.0 – 1.00	0.0 – 1.0
P	0.0 – 0.05	0.0 – 0.05	0.0 – 0.04
S	0.0 – 0.03	0.0 – 0.02	0.0 – 0.02
Cr	17.50 – 19.50	17.50 – 19.50	17.00 – 19.00
Ni	8.00 – 10.50	8.00 – 10.50	8.00 – 11.00
Fe	Balance	Balance	Balance
N	0.0-0.11	0.0-0.11	0.0 – 0.10

Properties of Stainless Steel 304

Mechanical Properties of Stainless Steel 304

Table 2a. Mechanical properties for 304 stainless steel alloys – sheet up to 8 mm thick

Grade	304	304L	304H
Tensile Strength (MPa)	540 – 750	520 – 700	-
Proof Stress (MPa)	230 Min	220 Min	-
Elongation A50 mm	45 Min %	45 Min %	-

Table 2b. Mechanical properties for 304 stainless steel alloys – plate from 8 – 75 mm thick

Grade	304	304L	304H
Tensile Strength (MPa)	520 – 720	500 – 700	-
Proof Stress (MPa)	210 Min	200 Min	-
Elongation A5	45 Min %	45 Min %	-

Table 2c. Mechanical properties for 304 stainless steel alloys - bar and section up to 160 mm diameter / thickness

Grade	304	304L	304H
Tensile Strength (MPa)	500 – 700	500 – 700	500 – 700
Proof Stress (MPa)	190	175 Min	185 Min
Elongation A50 mm	45 Min %	45 Min %	40 Min %
Hardness Brinell	215 Max HB	215 Max HB	-

Physical Properties of Stainless Steel 304

Table 3. Physical properties for 304 stainless steel alloys

Property	Value
Density	8.00 g/cm3
Melting Point	1450 °C
Modulus of Elasticity	193 GPa
Electrical Resistivity	0.72 x 10-6 Ω.m
Thermal Conductivity	16.2 W/m.K
Thermal Expansion	17.2 x 10-6/K

Applications Of Capillary Tube

Capillary tube is widely applied in Chemical industry, petroleum, electronics, accessories, medical treatment, aerospace, air conditioning, medical equipment, kitchen appliances, pharmaceuticals, water supply equipment, food machinery, power generation, boilers.

Medical Device Industry: Injection needle tube, puncture needle tube, medical industrial tube
Industrial electric heat pipe, industrial oil pipe
Instrumentation tube
Automobile tube

Food industrial tube

Stainless Steel Capillary Tube Size Chart

OD/T	0.05 – 0.07	0.07 – 0.1	0.1 – 0.14	0.14 – 0.19	0.19 – 0.24	0.24 – 0.39	0.39 – 0.49	0.49 – 0.99	0.99 – 1.4	1.4 – 2.0
0.2 – 0.3
0.3 – 0.4
0.4 – 0.5
0.5 – 0.8
0.8 – 1.0
1.0 – 1.5
1.5 – 2.0
2.0 – 2.5
2.5 – 3.0
3.0 – 3.5
3.5 – 4.0
4.0 – 5.0
5.0 – 6.0
6.0 – 8.0
*The Unit Is Mm.

Post time: Aug-17-2023