Bar and Rod
Plate and Sheet
Strip
Pipe and Tube
Wire
Welding
Powder Material
Cast Products
Forged Products
Fittings
Fastening
Round Bar:
φ2–500 mm, 1–6 m length
Flat/Square Bar:
4–100 mm thickness/width
Hex Bar:
A/F 3–100 mm
Hollow Bar:
OD 20–300 mm
Sheet:
0.3–6 mm thickness
Medium Plate:
6–25 mm thickness
Heavy Plate:
25–100 mm thickness
Standard Strip:
0.05–3 mm thick,
10–600 mm wide
Precision strip:
0.01–0.5 mm thick,
tight tolerance ±0.005 mm
Foil:
0.005–0.1 mm thick
Seamless Tube:
OD 6–450 mm,
WT 1–50 mm,
1–12 m length
Welded Tube:
OD 10–600 mm,
WT 1–20 mm
Capillary Tube:
OD 1–10 mm,
WT 0.1–2 mm
Wire Form:
Cold Drawn Wire,
Bright Wire,
Spring Wire,
Fine Wire,
Ultra-fine Wire
General Diameter:
φ0.1–10 mm
Coil Weight:
50–500 kg,
customizable tolerance
Solid Wire:
φ0.8–4.0 mm
Flux-cored Wire:
φ1.2–4.0 mm
Welding Rod:
φ2.0–5.0 mm
Powder Form:
AM 3D Printing Powder,
Spherical Powder,
Gas-atomized Powder,
Water-atomized Powder
Particle Size:
10–150 μm
Sphericity:
≥90% for AM grade
Cast Ingot:
φ200–800 mm
Precision Casting:
min wall 0.5 mm
Cast Pipe:
OD 100–600 mm,
WT 10–50 mm
Forged Bar:
Φ35–500 mm
Forged Ring:
OD 200–2000 mm
Forging Weight:
1–5000 kg
Fittings Form:
Elbow, Tee, Reducer, Flange, Cap, Outlet, Lap Joint
Size range:
1/2''–24'' (DN15–DN600)
Wall thickness:
Sch10–Sch160, STD, XS, XXS
Pressure Class:
150–2500 LB
Fastening Form:
Bolt, Nut, Screw, Stud, Washer, Pin, Rivet
Metric: M3–M64
Imperial: #4–2.5''
Length: 6–500 mm
1.4105 is a free-machining ferritic stainless steel containing about 17% chromium with sulphur and a small molybdenum addition. This datasheet presents the material within the Werkstoff-Nummer (DIN / EN) designation system.
With nominally 17% chromium, added sulphur and a small molybdenum content, 1.4105 is essentially the free-machining version of 1.4016 (X6Cr17): the sulphur forms manganese-sulphide inclusions that improve chip breaking and machinability, while the molybdenum partly offsets the resulting loss of corrosion resistance. Being a low-carbon ferritic grade it is magnetic and cannot be hardened by heat treatment, and offers properties similar to 1.4016 with markedly better machinability. It is widely used for automatic-lathe production of small turned parts.
Typical applications include screws, nuts, fasteners, toolholders, ball valves, fittings, furniture parts, and components for the petrochemical, automotive, food and machinery industries.
Typical values, annealed condition, per EN reference data.
| Property | Value | Unit |
|---|---|---|
| Density | 7.7 | g/cm³ |
| Melting range | 1425–1510 | °C |
| Elastic modulus | 220 | GPa |
| Coefficient of thermal expansion (20–100 °C) | 10.0 | µm/m·°C |
| Thermal conductivity (20 °C) | 25.0 | W/m·K |
| Specific heat (20 °C) | 460 | J/kg·K |
| Structure | Ferritic | — |
Specified per EN 10088-3 (W.Nr. 1.4105, X6CrMoS17).
| Element | Symbol | Min % | Max % | Role in Alloy |
|---|---|---|---|---|
| Iron | Fe | Balance | — | Base element |
| Chromium | Cr | 16.0 | 18.0 | Corrosion resistance |
| Sulphur | S | 0.15 | 0.35 | Free-machining (MnS inclusions) |
| Molybdenum | Mo | 0.20 | 0.60 | Offsets sulphur loss of corrosion resistance |
| Manganese | Mn | — | 1.50 | Forms MnS; deoxidiser |
| Silicon | Si | — | 1.50 | Deoxidiser |
| Carbon | C | — | 0.08 | Low (ferritic) |
| Phosphorus | P | — | 0.040 | Residual impurity |
Nominal: 17Cr free-machining (sulphurised) ferritic stainless steel.
Annealed (+A) condition, per EN 10088-3 for W.Nr. 1.4105.
| Condition | Property | Value |
|---|---|---|
| Annealed | Tensile strength (Rm) | 450–650 MPa |
| Annealed | 0.2% proof strength (Rp0.2) | ≥250 MPa |
| Annealed | Elongation (A5) | ≥20 % |
| Annealed | Hardness | ≤200 HB |
| — | Elastic modulus | 220 GPa |
Values per EN 10088-3; not hardenable by heat treatment. Confirm against the inspection certificate (EN 10204).
| Environment | Performance | Notes |
|---|---|---|
| Atmospheric / general | Moderate | Below 1.4016 (sulphur reduces resistance) |
| Organic and nitric acids | Good | At low concentrations |
| Chloride pitting / crevice | Limited | Sulphide inclusions are initiation sites |
| Chloride stress-corrosion cracking | Very Good | Ferritic — largely immune |
| Seawater | Not recommended | — |
Corrosion resistance is moderate and below 1.4016; not resistant to intergranular corrosion. The molybdenum addition partly offsets the loss caused by the sulphur.
A ferritic free-machining grade; cannot be hardened by heat treatment. Properties are set by annealing.
Anneal Heat to approximately 760–820 °C and cool slowly. Avoid prolonged exposure in the 400–540 °C range (475 °C embrittlement).
Not suitable for welding — the high sulphur content promotes hot cracking.
| Welding Process | Applicability | Filler / Consumable |
|---|---|---|
| GTAW / TIG | Not recommended | Austenitic (309) if unavoidable |
| GMAW / MIG | Not recommended | — |
| Brazing | Preferred join method | — |
The free-machining sulphur addition makes this grade unsuitable for structural welding.
Machining Guidelines
| Parameter | Recommendation |
|---|---|
| Machinability | Excellent — designed for automatic lathes |
| Chip breaking | MnS inclusions break chips; high speeds and feeds possible |
| Tooling | Standard carbide or HSS; good tool life |
| Coolant | Ample flood coolant |
Forming Processes
| Process | Notes |
|---|---|
| Cold forming | Limited — sulphur reduces ductility |
| Hot forming | ~1130–1050 °C forging range; anneal afterward |
| Industry | Typical Components | Key Requirements |
|---|---|---|
| Screw machining | Screws, nuts, fasteners, turned parts | Extensive machining |
| Petrochemical | Toolholders, fittings, valve parts | Machinability + moderate corrosion resistance |
| Food / machinery | Ball valves, machine parts | Machinability + corrosion resistance |
| Furniture / appliances | Decorative and functional parts | Machinability + cost |
| Product Form | DIN / EN Standard | Notes |
|---|---|---|
| Bar, rod and sections | EN 10088-3 · W.Nr. 1.4105 | X6CrMoS17 |
| Wire | EN 10088-3 · W.Nr. 1.4105 | — |
| Forging stock | EN 10088-3 · W.Nr. 1.4105 | — |
| Technical delivery | SEW 400 | — |
Free-machining (sulphurised) ferritic stainless steel. W.Nr. 1.4105 (X6CrMoS17).
| W.Nr. | Cr % | S % | Mo % | Best Used For |
|---|---|---|---|---|
| 1.4105 | 16–18 | 0.15–0.35 | 0.2–0.6 | Free-machining ferritic; screw-machine parts |
| 1.4016 | 16–18 | ≤0.015 | — | General ferritic; non-free-machining |
| 1.4104 | 16–18 | 0.15–0.35 | 0.2–0.6 | Free-machining, higher carbon (heat-treatable) |
| 1.4005 | 12–14 | 0.15–0.35 | ≤0.60 | Free-machining martensitic |
| 1.4305 | 17–19 | 0.15–0.35 | — | Free-machining austenitic |
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