316L Stainless Steel | UNS S31603 | WNR 1.4404

Grade 316 is the standard molybdenum-bearing grade, second in overall volume production to 304 amongst the austenitic stainless steels. The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments.

Grade 316L, the low carbon version of 316 and has very high immunity from sensitization (grain boundary carbide precipitation). It is extensively used in the oil and gas and chemical industries for its cost effective corrosion resistance and ease of fabrication. There is commonly no appreciable price difference between 316 and 316L stainless steel. The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures. Compared to chromium-nickel austenitic stainless steels, 316L stainless steel offers higher creep, stress to rupture and tensile strength at elevated temperatures.

These alloys may be considered for a wide variety of applications where one or more properties are important

Description Type 316/316L is a molybdenum-containing austenitic stainless steel intended to provide improved corrosion resistance relative to Type 304/304L in moderately corrosive process environments, particularly those containing chlorides or other halides.

Type 316/316L is non-magnetic in the annealed condition but may become slightly magnetic as a result of welding. Dual certification It is common for Type 316L to be dual certified as Type 316 and Type 316L when the material meets both the lower carbon limit of Type 316L and the slightly higher strengths of Type 316.

Specifications Type 316/316L can be supplied to meet AMS, ASTM, ASME, QQS, and MIL-S specifications.

Product forms available • Plate • Sheet • Tubular Products • Bar • Angle • Wire Rod • Billet • Fittings

Technical Data
Mechanical Properties

Temper Annealed Cold worked (approx. 20%)

Material 316 316L 316 316L

Tensile Rm 75 70 ksi (min) 102-131 ksi (min)

Tensile Rm 515 485 MPa (min) 700-900 MPa (min)

R.p. 0.2% Yield 30 27 ksi (min) 73-102 ksi (min)

R.p. 0.2% Yield 205 182 MPa (min) 500-700 MPa (min)

Elongation (2” or 4D gl) 35 % (min) 40 % (min)

Physical Properties (Room Temperature)

Specific Heat (0-100°C) 500 J.kg-1.°K-1

Thermal Conductivity 16.3 W.m -1.°K-1

Thermal Expansion 15.9 μm/μm/°C

Modulus Elasticity 193 GPa

Electrical Resistivity 7.4 μohm/cm

Density 7.99 g/cm3

Chemical Composition (% by weight)

316 316L

Element Min Max Min Max

C - 0.08 - 0.035

Mn - 2 - 2

Ni 10 14 10 15

Cr 16 18 16 18

Mo 2 3 2 3

S - 0.03 - 0.03

Si - 1 - 1

P - 0.045 - 0.045

Possible Alternative Grades

Table 5. Possible alternative grades to 316 stainless steel.

Grade Why it might be chosen instead of 316?

317L Higher resistance to chlorides than 316L, but with similar resistance to stress corrosion cracking.

Corrosion Resistance

Excellent in a range of atmospheric environments and many corrosive media - generally more resistant than 304. Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 60 °C. Considered resistant to potable water with up to about 1000 mg/L chlorides at ambient temperatures, reducing to about 500 mg/L at 60 °C.

316 is usually regarded as the standard “marine grade stainless steel”, but it is not resistant to warm seawater. In many marine environments, 316 does exhibit surface corrosion, usually visible as brown staining. This is particularly associated with crevices and rough surface finish.

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Temper	Annealed	Cold worked (approx. 20%)
Material	316	316L		316	316L
Tensile Rm	75	70	ksi (min)	102-131	ksi (min)
Tensile Rm	515	485	MPa (min)	700-900	MPa (min)
R.p. 0.2% Yield	30	27	ksi (min)	73-102	ksi (min)
R.p. 0.2% Yield	205	182	MPa (min)	500-700	MPa (min)
Elongation (2” or 4D gl)	35	% (min)	40	% (min)

	316	316L
C	-	0.08	-	0.035
Mn	-	2	-	2
Ni	10	14	10	15
Cr	16	18	16	18
Mo	2	3	2	3
S	-	0.03	-	0.03
Si	-	1	-	1
P	-	0.045	-	0.045

Grade	Why it might be chosen instead of 316?
317L	Higher resistance to chlorides than 316L, but with similar resistance to stress corrosion cracking.

1. Stock view

2. Processing and Technology for heating processing

Cutting processing   Quenching   Tempering Annealing



3. Quality testing

1.      Inspection Institution

Shanghai Fuda Testing Technology Group Co., LTD. Nanjing Branch

Focus on analysis, testing, testing, r & D four service areas. Analysis fields include component analysis, formula analysis, failure analysis, structure analysis, methodology development and validation, raw material quality control/evaluation, consistency evaluation, feature analysis and other directions; The testing field involves physical and chemical properties testing, toxic and harmful substances testing, flame retardant performance testing, reliability testing and other directions; The testing field involves energy spectrum, electron microscope, spectrum, chromatography, mass spectrometry and other directions; The r&d field involves formula development, formula upgrading, formula customisation, cooperative research and development and other directions.

Beijing Zhongke Chemical Technology Research Institute

It is a chemical technology research institution based on scientific research and testing. They adhere to paying equal attention to basic research and applied research, and combining applied research and technology transformation, developing into a comprehensive research institute characterised by "task-oriented disciplines". Approved by the relevant national departments, the company has become a third-party analysis and testing technology service unit, and has obtained CMA qualification certification. It has carried out research and development and design, analysis and testing, test and verification, generic processing, information and intellectual property services, providing public services for innovation of technology-based enterprises. Supported by the government innovation Fund, the institute has been awarded as a national high-tech enterprise.

2.Inspection Machining

Metal composition testing machine Computerised Materials Torsion Testing Machine Metal bar composite rod bending tensile strength testing machine

3. Material test certificate

4. Packaging

In the steel export activities, we also need to pack the steel to prevent the steel from being scattered in the transportation process. In the hoisting process, it is necessary to lift the steel. So steel is very necessary in the export process. Below is the picture of packaging：

According to the requirements of the state of steel materials, the use of binding, bare, frame, pallet.

Packing standard: according to the following national standard requirements (the parts beyond the requirements will be specified separately)

GB／T191 packaging-pictorial marking for handling of goods

GB／T4857 (all parts) basic test for transport packages

GB／T4879 rustproof packaging

GB／T5048 damp-proof packing

GB／T7350water-proof packing

GB／T8166 Package cushioning design

GB/T4892-1996 Hard straight square transport packaging size series

GB/T13201-91 Cylinder transport package size series

GB/T16471-1996Design and make the size limit of transport package

5. Logistic

1. Company profile

Luoyue Precision Metal established in 2018, is a leading Stockists and global distributor for Metal Raw Materials like Steel/Aluminum/ Stainless steel/Copper/ Nickel Rods, Bars, Plates, Sheets,Pipes, fittings, fasteners, Inconel alloys, Wire and Wire-Mesh to customers from aerospace, automotive, electronics, precision manufacturing, ordnance, marine, shipbuilding, oil & gas, power plant and construction.

The company has a high-precision, high-efficiency modern processing site, CNC machine tools and complete testing and inspection technology, and introduces international advanced technologies.

2. Certificates. (Business certificate/ISO9001/Trading certificate/SGS/FormE)

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3. Our customers

Customer visits

4. Past Inquiry

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1.Customer Rating

FAQ
1. Q: Are you a manufacturer?
A:No, we are not manufacturers. We have our own warehouse and our own company. I believe we will be the most suitable supplier for you.
2. Could we visit your factory?
A: Sure, we welcome you to visit the factory , check our production lines and know more about our strength and quality.
3. Q: Do you have quality control system?
A: Yes, we have ISO, BV, SGS certifications and our own quality control laboratory.
4. Q: Can you arrange the shipment for us?
A: Yes, we have designated sea freight and railway freight forwarders with decades of experiences and we get the best price with earliest vessel and professional service.
5. Q: How long is the delivery time?
A: Generally it is 7 days if we have the exact goods in our stock. If not, it will take around 15-20 days to get goods ready for delivery.
6. Q: Can I get some samples?
A: We are glad to provide free samples to you, but we do not offer the freight.
7. Q: What is your after-sale service?
A: We provide after-sale service and offer 100% guarantee on our products.
8. Q: What is your MOQ?
A: 2 Tons

Contact us

Specific Heat (0-100°C)	500	J.kg-1.°K-1
Thermal Conductivity	16.3	W.m -1.°K-1
Thermal Expansion	15.9	μm/μm/°C
Modulus Elasticity	193	GPa
Electrical Resistivity	7.4	μohm/cm
Density	7.99	g/cm3

	316		316L
Element	Min	Max	Min	Max
C	-	0.08	-	0.035
Mn	-	2	-	2
Ni	10	14	10	15
Cr	16	18	16	18
Mo	2	3	2	3
S	-	0.03	-	0.03
Si	-	1	-	1
P	-	0.045	-	0.045