Stainless Steel 416 seamless tubes and hollows (UNS S41600, EN 1.4005) are made for applications where machining is a major part of the job. This 13% chromium stainless steel contains added sulfur, giving it excellent free machining characteristics and making it well suited for producing bushes, shafts, valve parts and other machined components directly from tube. Amardeep Steel supplies SS 416 seamless tubes and hollows with EN 10204 3.1 mill test certificates, heat treatment records and complete heat traceability. Compare our TP410 pipes and tubes and SS 410S seamless pipes and tubes, or browse our stainless steel bars.
What Are Stainless Steel 416 Seamless Pipes & Tubes?
Grade 416 is a martensitic stainless steel based on 410 with at least 0.15% sulfur. The sulfur forms manganese sulfides that break chips cleanly during machining. The trade off is lower corrosion resistance, weldability and toughness than 410.
How 416 Seamless Tube Is Produced
ASTM covers 416 as free machining bar under A582, and no ASTM tube specification lists it. Seamless 416 tube is produced to drawing, usually as hollow bar or bored bar, and is mainly bought for machined parts rather than pressure piping. Tell us the finished part dimensions and we will advise on the hollow size.
SS 416 Seamless Tube Specifications
Parameter | Details |
|---|---|
Grade | Stainless Steel 416 |
UNS | S41600 |
Chemistry Basis | ASTM A582 limits; tube and hollows made to drawing |
Type | Seamless, hot finished or cold drawn, and machined hollows |
Size Range | To drawing or purchase specification |
Length | Random, fixed and cut lengths |
Supply Condition | Annealed, or hardened and tempered to drawing |
Test Certificate | EN 10204 3.1, with 3.2 available on request |
SS 416 Chemical Composition
Element | Content (%) |
|---|---|
Carbon (C) | 0.15 max |
Chromium (Cr) | 12.00 to 14.00 |
Sulfur (S) | 0.15 min |
Manganese (Mn) | 1.25 max |
Silicon (Si) | 1.00 max |
Phosphorus (P) | 0.060 max |
SS 416 Mechanical Properties
Property | Value |
|---|---|
Hardness, annealed (ASTM A582), max | 262 HBW |
Hardened and tempered | Hardness and strength to drawing |
Annealed hardness follows ASTM A582. Strength after hardening depends on the tempering temperature agreed with your order.
SS 416 Equivalent Grades
Standard | Designation |
|---|---|
UNS | S41600 |
EN / Werkstoff No. | 1.4005 (X12CrS13) |
JIS | SUS416 |
Equivalent grades are close matches, not direct substitutes. Check the drawing before switching standards.
410 vs 410S vs 416
Property | 410 | 410S | 416 |
|---|---|---|---|
Carbon, max | 0.15% | 0.08% | 0.15% |
Sulfur | 0.030% max | 0.030% max | 0.15% min |
Machinability | Fair | Fair | Best |
Weldability | Fair | Good | Poor |
If the part will be welded or must resist corrosion, choose TP410 pipes and tubes instead.
Applications of SS 416 Seamless Pipes and Tubes
- Machined bushes, sleeves and spacers
- Valve trim, stems and pump shafts
- Fasteners and fittings made on automatic lathes
- Gears and motor parts in dry service
Testing and Documentation
Every order of SS 416 seamless tube goes through the checks below at our testing facility or approved third party labs.
- Chemical analysis and PMI
- Hardness test
- Ultrasonic or eddy current testing on request
- Visual and dimensional inspection
Mill test certificates are issued to EN 10204 3.1, with 3.2 available on request. You can view our approvals on the certificates page.
Packing and Marking
Each length is marked with grade, size, heat number and heat treatment condition. Bores are oiled and capped. Tubes are packed in bundles or wooden boxes for export. Read more about our packing and despatch process.
Request a Quote for Stainless Steel 416 Seamless Pipes & Tubes
Send us the OD, ID or wall thickness, heat treatment condition, length and quantity, and our team will reply with price and delivery. Use the enquiry form or reach us through the contact page.
Frequently Asked Questions
What is Stainless Steel 416?
Stainless Steel 416 (UNS S41600, EN 1.4005) is a free machining martensitic stainless steel with 12 to 14% chromium and at least 0.15% sulfur.
Why is 416 easy to machine?
Its added sulfur forms manganese sulfides that break chips during cutting, making 416 the most machinable stainless steel.
Can 416 stainless steel be welded?
Welding 416 is not recommended because the sulfur causes hot cracking. Use 410 or 410S for welded parts.
Is there an ASTM tube specification for 416?
No. ASTM covers 416 as bar under A582. Seamless 416 tube and hollows are produced to drawing.
