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Gangsteel, a leading Chinese exporter of high-quality cold-rolled stainless steel coils and sheets, presents a detailed comparison between 416 and 430 stainless steel coils.
Grade 430 (AISI 430 or UNS S43000) is a ferritic stainless steel valued for its affordability, magnetic properties, and moderate corrosion resistance in mild environments, making it ideal for decorative and household coil applications. Grade 416 (AISI 416 or UNS S41600), a martensitic stainless steel with added sulfur for free-machining, offers higher strength and excellent machinability for precision parts, though it is less commonly supplied in coil form than 430. Both grades are supplied in coils for efficient slitting, stamping, and forming, with typical thicknesses from 0.3 mm to 3.0 mm and widths up to 1500 mm. While sharing chromium-based passivation, 416’s high sulfur (0.15–0.35%) improves machinability but reduces corrosion resistance and weldability compared to 430’s higher chromium and ferritic structure. This guide covers chemical composition, mechanical properties, equivalent materials, corrosion resistance, weldability, applications, cost, and more. As ferritic specialists, Gangsteel supplies premium 430 coils such as our JIS G4305 SUS 430 stainless steel sheet (available in coil form) and a240 Type_430 stainless steel sheet.
Coils of both grades are cold-rolled for uniform thickness and excellent surface finishes (2B, BA, No.4). Their magnetic nature and thermal conductivity (~24–26 W/m·K) make them suitable for heat dissipation or magnetic handling. However, 416 is chosen for machined precision parts, while 430 prioritizes cost and formability. Gangsteel’s advanced annealing and rolling ensure defect-free coils ready for downstream processing.
The compositions highlight 416’s sulfur addition for machinability and 430’s higher chromium for better passivation.
Based on ASTM A240/A276 (weight %):
|
Element |
416 |
430 |
|---|---|---|
|
Carbon (C) |
≤0.15 |
≤0.12 |
|
Chromium (Cr) |
12.0-14.0 |
16.0-18.0 |
|
Manganese (Mn) |
≤1.25 |
≤1.00 |
|
Silicon (Si) |
≤1.00 |
≤1.00 |
|
Phosphorus (P) |
≤0.060 |
≤0.040 |
|
Sulfur (S) |
0.15-0.35 |
≤0.030 |
|
Nickel (Ni) |
≤0.75 |
≤0.75 |
|
Iron (Fe) |
Balance |
Balance |
416’s high sulfur creates manganese sulfide inclusions for chip-breaking during machining, while 430’s higher chromium forms a stronger passive layer. For European equivalents, our EN10088 2 X6Cr17 stainless steel sheet matches 430 coil specifications.
Mechanical properties differ: 416 can be heat-treated for higher hardness; 430 remains annealed for ductility.
From ASTM A240/A276 and typical values:
|
Property |
416 (annealed) |
430 (annealed) |
|---|---|---|
|
Yield Strength (0.2% offset) |
≥275 MPa |
≥205 MPa |
|
Tensile Strength |
≥485 MPa |
≥450 MPa |
|
Elongation (in 50 mm) |
≥20% |
≥22% |
|
Hardness (Rockwell B) |
≤95 HRB |
≤89 HRB |
|
Modulus of Elasticity |
200 GPa |
200 GPa |
|
Density |
7.70 g/cm³ |
7.70 g/cm³ |
In hardened condition, 416 reaches 1200–1400 MPa tensile and 35–40 HRC for wear-resistant coils. 430 is softer for easier forming. Gangsteel’s DIN 1.4016 stainless steel sheet guarantees consistent 430 coil performance.
Both have international cross-references for global coil sourcing.
|
Standard/Region |
416 Equivalent |
430 Equivalent |
|---|---|---|
|
AISI/UNS (USA) |
416 / S41600 |
430 / S43000 |
|
EN/DIN (Europe) |
1.4005 / X12CrS13 |
1.4016 / X6Cr17 |
|
JIS (Japan) |
SUS416 |
SUS430 |
|
GB (China) |
1Cr13S / Y12Cr13 |
1Cr17 / 10Cr17 |
|
BS (UK) |
416S21 |
430S17 |
Our GB/T 10Cr17 1Cr17 stainless steel sheet is a direct Chinese 430 coil equivalent.
Corrosion resistance favors 430 in mild atmospheres; 416 is lower due to sulfur inclusions.
430 resists atmospheric corrosion, fresh water, and mild acids well but pits in chlorides.
416 offers moderate resistance (similar to 410 but reduced by sulfur), suitable for mild steam but more prone to pitting. Oxidation: Both scale at ~650–815°C, with 430 slightly better in dry air.
For decorative or mild coils: 430; machined parts in mild conditions: 416.
Weldability: 416 is poor due to high sulfur causing hot cracking; preheating and post-weld annealing are essential. 430 welds better but sensitizes, requiring annealing.
Fabrication: 430 excels in deep drawing and polishing for coils; 416 is designed for machining (free-machining grade) but less formable. Both are magnetic.
For machined precision coils: 416; decorative forming: 430 like our JIS G4305 SUS 430 stainless steel sheet.
430 for cost-effective decorative coil uses.
416 for high-machinability coil applications.
430 is cheaper (1200-1400 USD/MT) and widely available in coil form. 416 is similar or slightly higher (1300-1500 USD/MT) due to sulfur addition and martensitic processing. Gangsteel’s production ensures competitive 430 coil pricing like our a240 Type_430 stainless steel sheet.
Choose 416 for precision machining and wear resistance; select 430 for economy, formability, and better mild corrosion resistance. Evaluate machinability needs, environment, and fabrication method.
416 is martensitic with high sulfur for free-machining and higher strength; 430 is ferritic, softer, cheaper, and more corrosion-resistant in mild atmospheres.
430 in atmospheric and mild conditions; 416 is reduced by sulfur.
430 better (annealing only); 416 poor due to cracking risk.
We specialize in 430 coils like our DIN 1.4016 stainless steel sheet; contact us for 416 inquiries.
In conclusion, 416 delivers machinability and strength for precision coils, while 430 offers versatile economy for general use—Gangsteel is your trusted partner for quality stainless coils.
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