Stainless Steel 316 Round Bar | AMS 5648 | UNS S31600 | DIN 1.4401

UNS S31600 Round Bar Stockist, ASTM A276 SS 316 Round Bar Manufacturer, Stainless Steel 316 Round Bar Supplier, 1.4401 Round Bar Distributor, EN X5Crnimo17-12-2 Round Bar Exporter.

PM Industries manufactures, supplies, and stocks 316 Stainless Steel Round Bar (UNS S31600). It's a molybdenum-bearing austenitic stainless steel with approximately 16–18% chromium, 10–14% nickel, and 2–3% molybdenum. That molybdenum addition is the key compositional difference from 304, and it's what gives 316 meaningfully better resistance to pitting and crevice corrosion in chloride-containing environments. In practical service, that difference matters most in marine environments, chemical processing, and any application where chloride concentration, temperature, or both push the limits of what 304 can handle reliably.

ASTM A276 SS 316 Round Bar, UNS S31600 Round Bar, 1.4401 Round Bar, Stainless Steel 316 Round Bar.

316 and 316L are closely related and frequently dual-certified. The difference is carbon content: 316 allows up to 0.08% carbon while 316L is held to 0.03% maximum. For welded fabrications where sensitization in the heat-affected zone is a concern, 316L is the preferred specification. For applications that don't involve welding, standard 316 and 316L are essentially interchangeable in corrosion and mechanical performance.

Molybdenum pitting resistance is the practical reason 316 is specified over 304 in many applications. In chloride-containing environments, including coastal atmospheres, food processing environments with salt or acidic cleaning agents, pharmaceutical processing, and chemical plant service with moderate chloride content, 316's improved PREN relative to 304 provides meaningfully longer pitting-free service life. The difference isn't absolute, and for severe chloride service at elevated temperatures, higher-alloy grades like 317L, duplex 2205, or 6Mo super austenitic are appropriate. But for the broad middle ground of industrial and commercial applications with moderate chloride exposure, 316 covers the requirement well.

Marine and coastal performance is better than 304 in atmospheric and splash zone exposure. For full seawater immersion service, particularly at elevated temperatures, 316 can still show pitting over time, and higher-PREN alloys provide better long-term protection. For marine hardware in atmospheric or intermittent splash exposure, 316 performs reliably and is the standard specification in many marine architectural and hardware applications.

Hygienic surface characteristics and non-magnetic behavior in the annealed condition support food processing, pharmaceutical, and medical applications where contamination control and equipment cleanliness are requirements alongside corrosion resistance.

Bar is available in a range of diameters and surface finishes, including bright, turned, and polished conditions, with full material certification to ASTM A276, ASTM A479, and applicable specifications. Contact PM Industries for stock availability, dimensions, and pricing.

SpecificationStainless Steel 316 Round Bar

Specification	ASTM, EN, DIN, JIS, BS, ASME, AISI
Condition	Hardened & tempered, annealed
Length	1 to 6 Meters, Custom Cut Lengths
Round Bars	Outside Diameter in the range of 4mm to 500mm above as per the customer requirement.
Bright Bars	Outside Diameter in the range of 4mm to 500mm above as per the customer requirement.
Hex Bars	18mm – 57mm (11/16″ to 2-3/4″) above as per the requirement.
Square Bars	18mm – 47mm (11/16″ to 1-3/4″) above as per the requirement.
Flat Bars	1/2” to 10” in thickness range of 2mm to 150mm
Finish	Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Technique	Hot Rolled, Cold Rolled, Cold Drawn, Forged Round Bar, Rod
Tolerance	H8, H9, H10, H11, H12, H13, K9, K10, K11, K12 or as per clients’ requirements
Test Certificates	EN 10204/3.1B, NACE MR0103, NACE MR0175
Raw Materials Certificate	100% Radiography Test Report
Inspection	Third Party Inspection Report, etc

Available Types

Equivalent Material of 316 Round Bar

STANDARD	WERKSTOFF NR.	JIS	UNS	BS	AFNOR	GOST	EN
SS 316	1.4401 / 1.4436	SUS 316	S31600	316S31 / 316S33	Z7CND17‐11‐02	–	X5CrNiMo17-12-2 / X3CrNiMo17-13-3

Stainless Steel 316 Round Bar Mechanical Properties

Property	Values
Elongation	40%
Tensile Strength	515MPa, 75000Psi
Yield Strength	205MPa, 30000Psi

Stainless Steel 316 Round Bar Chemical Composition

Element	Composition
Nickel	10 – 14
Carbon	0.08 max
Manganese	2 max
Phosphorus	0.045 max
Sulfur	0.030 max
Silicon	1 max
Chromium	16 – 18
Molybdenum	2 – 3

Stainless Steel 316 Round Bar Size

US Bar		Metric		Japanese		Canadian/ASTM
Diameter (Inch)	Size of Bar	Diameter (milimeter)	size of Bar	Diameter (milimeter)	size of Bar	Diameter (milimeter2)	size of Bar
0.375	#3	5.5	5.5	10	10	200	15M
0.25	#2	5	5	6	6	100	10M
0.625	#5	7	7	16	16	500	25M
0.5	#4	6	6	13	13	300	20M
0.875	#7	9	9	22	22	1000	35M
0.75	#6	8	8	19	19	700	30M
1.125	#9	11	11	29	29	2500	55M
1	#8	10	10	25	25	1500	45M
1.375	#11	14	14	35	35
1.25	#10	12	12	32	32
1.625	#13	18	18	41	41
1.5	#12	16	16	38	38
1.875	#15	22	22	48	48
1.75	#14	20	20	44	44
2.25	#18	28	28	57	57
2	#16	25	25	51	51
		36	36
		32	32
		44	44
		40	40
		50	50

Condition

ANN	Annealed
H&T	Hardened and tempered.
PH	Precipitation hardened.

Finish

Bright drawn	BD	Slit rolled edge	SRE
Cold drawn	CD	Polished	P
Peeled and turned	P&T	Rough turned/peeled	RT
Cold finished	CF	Hot rolled pickled and annealed	HRAP
Centreless ground	CG	Hot finished	HF
Smooth turned	ST	reeled and Peeled	PR

Available Stock of Stainless Steel 316 Round Bar

Stainless Steel 316 Annealed Round Bar	EN X5Crnimo17-12-2 Shafting Round Bar
ASTM A276 SS 316 Normalized Round Bar	Stainless Steel 316 Automotive Round Bar
UNS S31600 Quenched & Tempered Round Bar	ASTM A276 SS 316 Aerospace Round Bar
1.4401 Solution Annealed Round Bar	UNS S31600 Oil & Gas Round Bar
JIS SUS 316 Hardened Round Bar	1.4401 Marine Round Bar
BS 316S31 Bright Round Bar	JIS SUS 316 Medical Grade Round Bar
Afnor Z7Cnd17‐11‐02 Polished Round Bar	BS 316S31 Hot Rolled Round Bar
EN X5Crnimo17-12-2 Mirror Finish Round Bar	Afnor Z7Cnd17‐11‐02 Cold Drawn Round Bar
Stainless Steel 316 Pickled & Passivated Round Bar	EN X5Crnimo17-12-2 Cold Rolled Round Bar
ASTM A276 SS 316 Coated / Plated Round Bar	Stainless Steel 316 Forged Round Bar
UNS S31600 Commercial Round Bar	ASTM A276 SS 316 Peeled Round Bar
1.4401 Precision Round Bar	UNS S31600 Turned Round Bar
JIS SUS 316 Straight Length Round Bar	1.4401 Ground Round Bar
BS 316S31 Cut-to-Length Round Bar	JIS SUS 316 Centreless Ground Round Bar
Afnor Z7Cnd17‐11‐02 Structural Round Bar	BS 316S31 Precision Ground Round Bar