Density of Stainless Steel 316

Stainless steel 316 is an incredibly versatile material widely used in various industries due to its excellent strength, corrosion resistance, and durability. But have you ever wondered about ss density? This guide delves into everything you need to know about stainless steel 316 density, including its definition, applications, and why it matters.

What is Stainless Steel 316?

Stainless steel 316, also known as UNS S31600, belongs to the austenitic family of stainless steels. It is characterized by its high chromium content (16-18%) and molybdenum addition (2-3%). This composition grants it superior corrosion resistance, particularly in chloride-rich environments, compared to other grades like 304. Additionally, 316 stainless steel excellent formability, weldability, and mechanical properties make it a versatile material used in various industries, including:

• Food processing: Equipment and utensils
• Marine: Boat fittings and hardware
• Chemical processing: Tanks and pipelines
• Architectural: Building facades and decorative elements
• Medical: Surgical instruments and implants

What is the Density of Stainless Steel 316 in kg/m3, g/cm3, lb/in3, lb/ft3

The density of stainless steel 316 is 7980 kg/m3 or 8.0 g/cm³ (0.289 lb/in³00). This density is slightly higher than other common stainless steel 304 is 7930 kg/m³ or 7.93 g/cm³ (0.286 lb/in³) due to the addition of molybdenum, which enhances its corrosion resistance.SS 304 is less dense than stainless steel 316, but somewhat denser than stainless steel 430 at 7750 g/m3.

Stainless Steel – Grade 316 (UNS S31600)

Material:	Stainless Steel – Grade 316 (UNS S31600)
Composition:	Fe/<.03C/16-18.5Cr/10-14Ni/2-3Mo/<2Mn/<1Si/<.045P/<.03S

Property	Minimum Value (S.I.)	Maximum Value (S.I.)	Units (S.I.)	Minimum Value (Imp.)	Maximum Value (Imp.)	Units (Imp.)
Atomic Volume (average)	0.0069	0.0072	m3/kmol	421.064	439.371	in3/kmol
Density	7.87	8.07	Mg/m3	491.308	503.794	lb/ft3
Energy Content	91	111	MJ/kg	9858.82	12025.6	kcal/lb
Bulk Modulus	134	152	GPa	19.435	22.0457	106 psi
Compressive Strength	170	310	MPa	24.6564	44.9617	ksi
Ductility	0.3	0.51		0.3	0.51	NULL
Elastic Limit	170	310	MPa	24.6564	44.9617	ksi
Endurance Limit	256	307	MPa	37.1296	44.5265	ksi
Fracture Toughness	112	278	MPa.m1/2	101.925	252.993	ksi.in1/2
Hardness	1700	2200	MPa	246.564	319.083	ksi
Loss Coefficient	0.00095	0.00148		0.00095	0.00148	NULL
Modulus of Rupture	170	310	MPa	24.6564	44.9617	ksi
Poisson’s Ratio	0.265	0.275		0.265	0.275	NULL
Shear Modulus	74	82	GPa	10.7328	11.8931	106 psi
Tensile Strength	480	620	MPa	69.6181	89.9234	ksi
Young’s Modulus	190	205	GPa	27.5572	29.7327	106 psi
Glass Temperature			K			°F
Latent Heat of Fusion	260	285	kJ/kg	111.779	122.527	BTU/lb
Maximum Service Temperature	1023	1198	K	1381.73	1696.73	°F
Melting Point	1648	1673	K	2506.73	2551.73	°F
Minimum Service Temperature	0	0	K	-459.67	-459.67	°F
Specific Heat	490	530	J/kg.K	0.379191	0.410145	BTU/lb.F
Thermal Conductivity	13	17	W/m.K	24.3364	31.8246	BTU.ft/h.ft2.F
Thermal Expansion	15	18	10-6/K	27	32.4	10-6/°F
Breakdown Potential			MV/m			V/mil
Dielectric Constant						NULL
Resistivity	69	81	10-8 ohm.m	69	81	10-8 ohm.m

SS 316 Mechanical Properties

Grade	Tensile Str (MPa) min	Yield Str 0.2% Proof (MPa) min	Elong (% in 50 mm) min	Hardness
				Rockwell B (HR B) max	Brinell (HB) max
316	515	205	40	95	217
316L	485	170	40	95	217
316H	515	205	40	95	217

316 Stainless Steel Physical Properties

Grade	Density(kg/m3)	Elastic Modulus (GPa)	Mean Co-eff of Thermal Expansion (µm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100 °C (J/kg.K)	Elec Resistivity (nΩ.m)
			0-100 °C	0-315 °C	0-538 °C	At 100 °C	At 500 °C
316/L/H	8000	193	15.9	16.2	17.5	16.3	21.5	500	740

SUS 316 Stainless Steel Environmental Properties

	Resistance Factors1=Poor 5=Excellent
Flammability	5
Fresh Water	5
Organic Solvents	5
Oxidation at 500C	5
Sea Water	5
Strong Acid	5
Strong Alkalis	5
UV	5
Wear	4
Weak Acid	5
Weak Alkalis	5

Why do you need to know the density of stainless steel 316?

Knowing the density of 316 stainless steel is important for several reasons:

• Weight calculations: When designing or purchasing components, knowing the density allows you to accurately calculate the weight of the material based on its volume. This is crucial for logistics, structural calculations, and ensuring equipment operates within safety limits.
• Material cost estimation: By knowing the density and price per unit volume, you can estimate the total cost of the material required for a specific project.
• Material selection: Comparing the density of different materials can help you choose the most suitable option for your application. For example, if weight is a critical factor, a material with a lower density might be preferred.
• Performance prediction: Density plays a role in various material properties like strength, stiffness, and thermal conductivity. Understanding the density helps predict how the material will perform in specific applications.

Conclusion

Knowing the density of stainless steel 316 is crucial for various applications. This information enables accurate weight calculations, material cost estimations, informed material selection, and performance predictions. By understanding the density of 316 stainless steel, you can optimize your designs and ensure the successful implementation of your projects.

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