Stainless Steel 304 – 1.4301 Density

Stainless steel 304, along with its variant stainless steel 304L, are denoted as 1.4301 and 1.4307, respectively. The designation Type 304 signifies the utmost versatility and widespread application of this stainless steel grade. It is sometimes still referred to by its former moniker, “18/8,” which reflects its composition of 18% chromium and 8% nickel. Type 304 stainless steel falls within the austenitic category, displaying remarkable deep-draw capabilities. This attribute has established 304 as the predominant choice for various uses such as sinks and saucepans. In contrast, Type 304L is a low-carbon iteration of 304, suited for heavy-duty components that require enhanced weldability. Certain products, including plates and pipes, might be offered as “dual certified,” meeting the criteria for both 304 and 304L. For applications demanding high-temperature performance, the high-carbon variant 304H is also available. The qualities described in this data sheet are typical for ASTM A240/A240M flat-rolled products. While specifications within these standards are expected to align closely, they may not be entirely identical to the particulars provided in this data sheet.

Weight and Density of Stainless Steel 304 in kg/mm3, kg/m3 , g/cm3, lb/in3, lb/ft3

The density of stainless steel 304 is 7,930 kg/m³ or 7.93 g/cm³ (equivalent to 0.286 lb/in³). This means that the weight of 304 stainless steel is 7,930 kg per cubic meter.

Density (ρ) is determined by dividing the mass (m) of an object by its volume (V). The formula to calculate density is ρ = m/V. The unit of density in the International System of Units (SI) can be expressed in grams per cubic centimeter (g/cm³), grams per cubic decimeter (kg/dm³), or kilograms per cubic meter (kg/m³).

Stainless Steel	Density (g/cm3)	Density (kg/dm3)	Density (kg/m3)	Density (lb/in3)	Density (lb/ft3)
304	7.93	7.93	7,930	0.286	495.05

Why do you need to know the density of stainless steel?

To determine the weight of stainless steel, you can use ss304 density and volume. For instance:

Metal manufacturers have the capability to calculate the weight of the metal to be melted by considering the volume of the mold and the ss 304 density of the metal before casting. Similarly, for various stainless steel products like steel wire, steel plate, steel pipe, section steel, and more, their weight can be calculated based on the density of the stainless steel material.

304 Stainless Steel Physical Properties:

Property	Value
Density	8,000 Kg/m3
Melting Point	1450 °C
Thermal Expansion	17.2 x 10-6 /K
Modulus of Elasticity	193 GPa
Thermal Conductivity	16.2W/m.K
Electrical Resistivity	0.072 x 10-6 Ω .m

SS 304 Mechanical properties:

Property	Value
Comprehensive Strength	210 MPa
Proof Stress	210 Min MPa
Tensile Strength	520 – 720 MPa
Elongation	45 Min%

sus 304 Stainless Steel Chemical Compositions:

Element	% Present
Carbon (C)	0.07
Chromium (Cr)	17.50 – 19.50
Manganese (Mn)	2.00
Silicon (Si)	1.00
Phosphorous (P)	0.045
Sulphur (S)	0.015b)
Nickel (Ni)	8.00 – 10.50
Nitrogen (N)	0.10
Iron (Fe)	Balance

Density of Stainless Steel
Stainless Steel	Density (g/cm3), or specific weight	Density (kg/m3)	Density (lb/in3)	Density (lb/ft3)
304, 304L, 304N	7.93	7930	0.286	495
316, 316L, 316N	8.0	8000	0.29	499
201	7.8	7800	0.28	487
202	7.8	7800	0.28	487
205	7.8	7800	0.28	487
301	7.93	7930	0.286	495
302, 302B, 302Cu	7.93	7930	0.286	495
303	7.93	7930	0.286	495
305	8.0	8000	0.29	499
308	8.0	8000	0.29	499
309	7.93	7930	0.286	495
310	7.93	7930	0.286	495
314	7.72	7720	0.279	482
317, 317L	8.0	8000	0.29	499
321	7.93	7930	0.286	495
329	7.8	7800	0.28	487
330	8.0	8000	0.29	499
347	8.0	8000	0.29	499
384	8.0	8000	0.29	499
403	7.7	7700	0.28	481
405	7.7	7700	0.28	481
409	7.8	7800	0.28	487
410	7.7	7700	0.28	481
414	7.8	7800	0.28	487
416	7.7	7700	0.28	481
420	7.7	7700	0.28	481
422	7.8	7800	0.28	487
429	7.8	7800	0.28	487
430, 430F	7.7	7700	0.28	481
431	7.7	7700	0.28	481
434	7.8	7800	0.28	487
436	7.8	7800	0.28	487
439	7.7	7700	0.28	481
440 (440A, 440B, 440C)	7.7	7700	0.28	481
444	7.8	7800	0.28	487
446	7.6	7600	0.27	474
501	7.7	7700	0.28	481
502	7.8	7800	0.28	487
904L	7.9	7900	0.285	493
2205	7.83	7830	0.283	489

SS304 Alloy Designations:

Stainless steel grade 1.4301, commonly known as 304, corresponds to various other designations, including S30400, 304S15, 304S16, 304S31, and EN58E.

304 Stainless Steel Corrosion Resistance:

Stainless Steel 304 has excellent corrosion resistance in a variety of situations and when exposed to various corrosive agents. In chloride-rich conditions, however, it may undergo pitting and crevice corrosion. Stress corrosion cracking can also occur at temperatures exceeding 60°C.

304 SS Heat Resistance:

In intermittent service, Stainless Steel 304 demonstrates good resistance to oxidation at temperatures up to 870°C, and it can be used continuously up to 925°C. Nonetheless, extended usage between 425°C and 860°C is not recommended. For applications within this temperature range, it is advisable to use 304L due to its resistance to carbide precipitation. When high strength is required at temperatures ranging from 500°C to 800°C, grade 304H is suggested, as is water corrosion resistance.

Stainless Steel 304 Fabrication:

When working with stainless steel, including 304, it is essential to use tools specifically dedicated to stainless steel materials. Tooling and work surfaces must be thoroughly cleaned prior to use to prevent cross-contamination from easily corroded metals, which could discolour the fabricated product’s surface.

AISI 304 Stainless Steel Cold Working:

304 stainless steel is susceptible to work hardening during fabrication processes involving cold working. Therefore, it may require intermediate annealing to alleviate work hardening and prevent tearing or cracking. After fabrication, a full annealing operation should be conducted to reduce internal stresses and optimize corrosion resistance.

SS 304 Hot Working:

For fabrication methods like forging, hot working should occur after uniform heating to temperatures ranging from 1149°C to 1260°C. Following hot working, the fabricated components should be rapidly cooled to ensure maximum corrosion resistance.

SS304 Stainless Steel Machinability:

Stainless Steel 304 possesses good machinability. To enhance machining, certain rules should be followed: cutting edges must be kept sharp to prevent excess work hardening, and cuts should be light but deep enough to avoid surface work hardening. Chip breakers are recommended to ensure clear swarf removal. Due to the low thermal conductivity of austenitic alloys like 304, coolants and lubricants are necessary and should be used in substantial quantities.

304 Stainless Steel Heat Treatment:

Heat treatment cannot be used to harden 304 stainless steel. After heating the material to temperatures ranging from 1010°C to 1120°C, solution treatment or annealing can be conducted by rapidly cooling it.

Stainless Steel 304 Weldability:

Type 304 stainless steel exhibits excellent fusion welding performance with or without fillers. Grade 308 stainless steel is the recommended filler for welding 304, while grade 308L is recommended for welding 304L. In cases where heavy welded sections are involved, post-weld annealing may be necessary, though not required for 304L. For applications where post-weld heat treatment is not feasible, grade 321 filler may be used.

Application:

• Saucepans
• Springs, screws, nuts & bolts
• Sinks & splashbacks
• Architectural panelling
• Tubing
• Brewery, food, dairy and pharmaceutical production equipment
• Sanitary ware and troughs

Supplied Forms:

• Sheet
• Strip
• Bar
• Plate
• Pipe
• Tube
• Coil
• Fittings

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