304 stainless steel pipe

304 stainless steel is a common material in stainless steel with a density of 7.93 g/cm³; it is also called 18/8 stainless steel in the industry, which means it contains more than 18% chromium and more than 8% nickel; it is resistant to high temperatures of 800°C and has processability Good, high toughness characteristics, widely used in industrial and furniture decoration industries and food and medical industries. However, it should be noted that compared with ordinary 304 stainless steel, food-grade 304 stainless steel has stricter content indicators. For example: The international definition of 304 stainless steel is that it mainly contains 18%-20% chromium and 8%-10% nickel, but food-grade 304 stainless steel contains 18% chromium and 8% nickel, which is allowed to fluctuate within a certain range, and Limit the content of various heavy metals. In other words, 304 stainless steel is not necessarily food grade 304 stainless steel.

Common marking methods on the market include 06Cr19Ni10 and SUS304, of which 06Cr19Ni10 generally represents national standard production, 304 generally represents ASTM standard production, and SUS304 represents Japanese standard production.

304 is a versatile stainless steel that is widely used to make equipment and parts that require good comprehensive properties (corrosion resistance and formability). In order to maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 18% chromium and more than 8% nickel. 304 stainless steel is a brand of stainless steel produced in accordance with American ASTM standards.

Physical properties

Tensile strength σb (MPa)≥515-1035
Conditional yield strength σ0.2 (MPa)≥205
Elongation δ5 (%)≥40
Reduction of area ψ (%)≥?
Hardness: ≤201HBW; ≤92HRB; ≤210HV
Density (20℃, g/cm³): 7.93
Melting point (℃): 1398~1454
Specific heat capacity (0~100℃, KJ·kg-1K-1): 0.50
Thermal conductivity (W·m-1·K-1): (100℃) 16.3, (500℃) 21.5
Linear expansion coefficient (10-6·K-1): (0~100℃) 17.2, (0~500℃) 18.4
Resistivity (20℃, 10-6Ω·m2/m): 0.73
Longitudinal elastic modulus (20℃, KN/mm2): 193

Application areas

304 stainless steel is the most widely used chromium-nickel stainless steel. As a widely used steel, its metal products are resistant to high temperatures and have good processing performance, so they are widely used in industry, furniture decoration and food and medical industries.

Suitable for food processing, storage and transportation. Has good processing performance and weldability. Plate heat exchangers, corrugated tubes, household products (Class 1 and 2 tableware, cabinets, indoor pipelines, water heaters, boilers, bathtubs), auto parts (windshield wipers, mufflers, molded products), medical equipment, building materials, chemistry, food industry , agriculture, ship parts, etc. 304 stainless steel is a nationally recognized food-grade stainless steel.

304 stainless steel is widely used in curtain walls, side walls, roofs and other construction purposes, but in severely corrosive industries or marine atmospheres, it is best to use 316 stainless steel. There are several design guidelines that include 304 and 316 stainless steel.

Product ingredients

serial number	standard/S30400	C	Mn	P	S	Si	Cr	Ni	N	Cu
1	ASTM A276/A276M-15	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	-	-
2	ASTM A959-11	0.07	2.00	0.045	0.030	1.00	17.5-19.5	8.0-11.0	-	-
3	ASTM A240/A240M-15a	0.07	2.00	0.045	0.030	0.75	17.5-19.5	8.0-10.5	-	-
4	ASTM A182/A182M-15	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	0.10	-
5	ASTM A193/A193M-15	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	-	-
6	ASTM A269/A269M-15	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	-	-
7	ASTM A312/A312M-15a	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	-	-
8	ASTM A320/A320M-15a	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	-	-
9	ASTM A403/A403M-15	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	-	-
10	ASTM A493-09(2013)	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-10.5	0.10	1.00
11	ASTM A554-15a (MT-304)	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	-	-
12	JIS G4303:2012	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-10.5	-	-
13	JIS G4304:2012	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-10.5	-	-
14	JIS G4305:2012	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-10.5	-	-
15	GB/T 20878-2007	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	-	-

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FAQ

Q: How many coutries you already exported ?
A: Exported to more than 50 countries mainly from America, Russia, UK, Kuwait, Egypt, Turkey, Jordan,India, etc.

Q:What product information do I need to provide?
A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

Q:What are the shipping ports?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can choose other ports according to your needs.

Q:About 304 seamless stainless steel product prices?
A:Prices vary from period to period due to cyclical changes in the price of raw materials.

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