Stainless Steel 416Se Round Bar
➡️ SS 416Se | UNS S41623 | DIN 1.4029 | AISI 416Se | ASTM A582 | AMS 5610
➡️ ASTM, EN, JIS & International Standards
➡️ Supply Conditions
➡️ Multiple Diameters & Supply Lengths
➡️ Global Export & International Delivery
Country of Origin:
Europe, Japan, USA
Material Type:
Stainless Steel
UNS Number:
S41623
Wr. No.:
1.4029
MTC Available:
EN 10204 3.1
Product Description for Stainless Steel 416Se Round Bar
Stainless Steel 416Se Round Bar is a free-machining martensitic stainless bar made to UNS S41623. It contains 12–14% chromium, up to 0.15% carbon and at least 0.15% selenium. The selenium forms small selenide particles that break chips cleanly during cutting, which gives very good machinability in automatic lathes and CNC machines.
The grade is the selenium-bearing version of Type 416. Selenide inclusions are more rounded than the sulfide inclusions found in standard 416. Because of this, 416Se is often chosen when a finer machined surface finish, better cold-heading behaviour or slightly better transverse properties are wanted.
Bars are produced to ASTM A582 / A582M, the American standard for free-machining stainless steel bars. They are supplied annealed for best machinability, or hardened and tempered when higher strength is needed. The alloy can be hardened by heat treatment, and it is magnetic in all conditions.
Corrosion resistance is moderate. It is suitable for mild atmospheres, fresh water, steam, petroleum products and many foods, but it is lower than non-free-machining 410 because of the selenide particles. The grade is not suited to marine or chloride service.
Common parts include valve trim, pump shafts, screws, bolts, nuts, gears, pinions, motor shafts and precision turned components made in high volumes. No direct European or Japanese standard grade with selenium has been identified, so buyers outside the USA should order to ASTM A582 or agree the chemistry directly with the mill. Because 416Se machines so easily, it can cut cycle times on automatic lathes compared with non-free-machining 410.
Common Applications of Stainless Steel 416Se Round Bar
➡️ Machined shafts, spindles, valve stems, pump sleeves and pins for food, beverage, dairy and pharmaceutical equipment, where the passive chromium oxide film resists both product acids and caustic clean-in-place chemicals.
➡️ Fasteners, studs, bolts, threaded rod and anchor components produced from bar stock, chosen for corrosion resistance combined with the ductility needed for cold heading and thread rolling.
➡️ Chemical, water treatment and general process plant parts such as agitator shafts, flange blanks, nozzles and support components handling water, steam and mildly corrosive media free of significant chlorides.
➡️ Architectural and structural hardware including handrail stanchions, balustrade fittings, tension rods and bollards, where a bright ground or polished bar finish provides both appearance and low maintenance.
International Equivalent Grade for SS 416Se Round Bar
Standard
Country / Region
Grade
UNS
USA
UNS S41623
AISI / ASTM
USA
AISI 416Se / AMS 5610
SAE J405
USA
S41623
EN / DIN
Europe
EN 1.4029 (X33CrS13 / X20Cr13 / X30Cr13)
BS
UK
416S29 / 416S37 / En56BM
JIS G4303
Japan
SUS 416Se
GB/T
China
Y20Cr13Se / 2Cr13Se
KS
South Korea
STS 416Se
AFNOR
France
Z30CF13
Technical Specification for Stainless Steel 416Se Round Bar
Specification
Value
Unit
Material
Stainless steel
-
Grade
416Se / UNS S41623
-
Standard
ASTM A582 / A582M
-
Product Form
Round bar
-
Diameter (supply range)
3–150
mm
Length (random)
3–6
m
Manufacturing Process
Hot rolled, cold drawn, turned or ground
-
Surface Finish
Hot finished, cold drawn, turned, centreless ground
-
Heat Treatment / Delivery Condition
Annealed (Condition A) or hardened and tempered as ordered
-
Tolerance Standard
ASTM A484 / A484M
-
Density
7.7
g/cm³
Melting Range
1480–1530
°C
Thermal Conductivity at 100°C
25
W/m·K
Coefficient of Thermal Expansion 0–100°C
9.9
µm/m·K
Specific Heat at 20°C
460
J/kg·K
Electrical Resistivity at 20°C
0.57
µΩ·m
Modulus of Elasticity at 20°C
200
GPa
Magnetic Properties
Ferromagnetic
-
Testing / Inspection
Chemical analysis, hardness, dimensional and visual check
-
Certification
EN 10204 3.1 mill test certificate
-
Technical Specifications
Get the key technical specifications for Stainless Steel 416Se Round Bar
Stainless Steel 416Se Round Bar is ordered to ASTM A582 / A582M, which covers free-machining stainless bars. General requirements such as dimensional tolerances, straightness, surface condition and marking come from ASTM A484 / A484M.
ASTM A582 controls these bars mainly by hardness rather than by tensile tests. The annealed condition is the usual choice for machining. Harder tempered conditions can be ordered where higher strength is needed straight from the bar. The purchase order should state the condition and hardness range required.
Bars are hot rolled and annealed, then often cold drawn, turned or centreless ground to give close tolerances for automatic lathe feeding. Ground bars are common for precision work. Annealing is usually carried out by slow cooling from about 815–900°C. Hardening is done from about 925–1010°C followed by oil or air quenching and tempering.
The physical values listed for 416Se are reference data for heat-transfer and expansion calculations. The grade is magnetic. Each 416Se heat is checked for selenium content, hardness and size before dispatch. Because selenium affects corrosion behaviour, parts should be passivated after machining using a method suitable for free-machining grades.
Selenium-bearing bar is produced by fewer mills than sulfur-bearing 416, so lead times can be longer and minimum order quantities higher. Confirm stock sizes early, and state whether the bar is required in Condition A (annealed) or Condition T (hardened and tempered).
Chemical Composition for Stainless Steel 416Se Round Bar
Element
Symbol
Min
Max
Unit
Carbon
C
-
0.15
%
Manganese
Mn
-
1.25
%
Silicon
Si
-
1.00
%
Phosphorus
P
-
0.060
%
Sulfur
S
-
0.060
%
Chromium
Cr
12.0
14.0
%
Selenium
Se
0.15
-
%
Chemical Composition
View the chemical composition and applicable material limits for SS 416Se Round Bar
The composition limits shown are those of UNS S41623 in ASTM A582. The main difference from Type 416 is that selenium (0.15% minimum) replaces most of the sulfur used for free machining. Sulfur is held to 0.060% maximum.
Chromium at 12–14% gives the passive film that provides basic resistance to rust, steam, fresh water and mild chemicals. Carbon up to 0.15% allows the steel to form martensite on quenching, so the bar can be hardened and tempered to higher strength.
Selenium forms fine selenide particles. These act as chip breakers and lubricants at the tool edge. This improves tool life, cutting speed and surface finish. Selenides tend to be more rounded than sulfides, so they have a smaller effect on transverse ductility and cold forming.
In 416Se, manganese also helps form the inclusions that break chips, while silicon deoxidises the melt. Phosphorus is set higher than in standard grades to help machinability. The free-machining additions reduce corrosion resistance and weldability compared with Type 410. For this reason welding is not normally recommended. Always check the heat analysis on the certificate against the ASTM A582 limits. Buyers who only need good machining, not the best surface finish, can often use standard 416 with sulfur, which is more widely stocked.
Mechanical Properties for Stainless Steel 416Se Round Bar
Mechanical Property
Value
Unit
Hardness (ASTM A582, annealed Condition A)
≤ 262
HB
Tensile Strength (annealed)
517
MPa
Yield Strength 0.2% (annealed)
276
MPa
Elongation (annealed)
30
%
Hardness (hardened and tempered)
Per ordered ASTM A582 condition
-
Mechanical Properties
Check the key mechanical properties and performance requirements of SS 416Se Round Bar
ASTM A582 sets hardness as the main acceptance test for free-machining stainless bars. In the annealed condition the maximum hardness is 262 HB. Tensile, yield and elongation values in the table are reference results for annealed bar and are given for guidance only. They are not mandatory limits.
The annealed condition gives the best machinability and is the standard supply condition for automatic lathe work. When higher strength is needed, the bar can be hardened by heating to about 925–1010°C, quenching in oil or air and tempering. The tempering temperature sets the final balance between hardness and toughness.
Tempering in the range of about 400–580°C should be avoided because it lowers impact toughness and corrosion resistance in martensitic stainless steels. Buyers who need a hardened condition should order the specific ASTM A582 condition or a hardness range, and check it on the mill certificate. Mechanical properties can vary with bar size and processing route. If parts will be thread-rolled or cold-headed after machining, specify the annealed condition, because the extra ductility reduces cracking at the thread roots.
For fasteners and valve stems, Condition T gives higher strength without extra heat treatment at the machine shop, which saves a process step.
Dimension / Sizes for Stainless Steel 416Se Round Bar
Dimension / Size
Value
Unit
Available Diameter Range (supply capability)
3–150
mm
Standard Length (random)
3–6
m
Custom / Cut-to-Length
Available on request
-
Diameter Tolerance
Per ASTM A484 / A484M, cold-finished tolerance class for bright and ground bars
-
Length Tolerance
Per ordered standard or as agreed (commonly +50 / -0 mm for cut lengths)
-
Straightness Tolerance
Per ASTM A484 or as agreed for automatic lathe bars
-
End Condition
Saw cut square, chamfered or as ordered
-
Surface Finish
Hot finished, cold drawn, turned, centreless ground, polished
-
Dimensions & Sizes
Explore available diameters, lengths, and dimensional requirements for SS 416Se Round Bar
Pricing for Stainless Steel 416Se Round Bar
Round Bar Prices are generally quoted per kilograms or meters tonnes and can fluctuate with the global raw material and market prices. The final price will depend on a variety of factors, including the grade size, diameter, length, surface finish, the quantity and whether the bars are cut to length or in standard lengths.
For smaller quantities, we can also quote per metre or per piece basis once the required dimensions have been confirmed. Container-loads or orders that are larger in size are typically priced per tonne, based upon the specifications required and the supply conditions.
Please provide your desired dimensions, grades, length number, and end for a current quote including the lead time applicable and details for certification.
Pricing
Get current Stainless Steel 416Se Round Bar pricing based on size, quantity, grade, finish, and delivery requirements.
Why Choose Us
Euro Steel Bars is an international distributor, stockist and exporter of stainless round steel bars that cover carbon, stainless alloy, special grades. We stock a variety of sizes and grades. We guarantee every order with mill test certificates as well as full quality-assurance documentation. Our name speaks to our roots: European-sourced materials that is backed by the certificates and rigor that buyers from Asia as well as the Gulf and Africa are looking for.
Each bar we deliver is accompanied by EN 10204 3.1 mill test certificates as well as complete documentation of quality, so what you receive corresponds to what’s written in the documents. We carry a selection of sizes and grades ready for transport, and cut length upon the request of customers, which results in quicker lead times, whether you’re ordering just a one-off spec or a complete project tonnage.
We operate an actual wholesale business that is that is supported with an internationally-operated supply chain therefore we are able to serve fabricators sourcing one grade the same way in the same way as an EPC contractor who is placing a large order. Our clients include manufacturers, fabricators EPC construction companies, engineers oil and gas projects as well as construction companies. we design our inventory as well as documentation to show what buyers need to bring projects forward.
Our customers trust us across Qatar, Oman, Bahrain, Kuwait, Jordan, Malaysia, Singapore, Thailand, Taiwan, Turkey, Italy and South Africa. If you’re looking to source an Gulf energy project, or a construction project within Southeast Asia, you get the same quality of certified material, the exact documentation, and the exact delivery procedure.
Frequently Asked Questions
Should I buy 416Se or standard 416 round bar?
Does 416Se machine better than 303 stainless steel?
How hard can 416Se round bar get after heat treatment?
How should machined 416Se parts be passivated?
What is the correct way to harden and machine 416Se?
Can 416Se be used in marine or welded parts?
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