416 Stainless Steel Plate
416 stainless steel is a type of martensitic stainless steel, whose most central feature is having the best machinability among all stainless steels, making it a typical 'free-cutting steel.' It sacrifices some corrosion resistance by adding elements such as sulfur, but in return gains extremely high machining efficiency.
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Product Introduction

416 Stainless Steel Plate is a martensitic chromium stainless steel intentionally alloyed with sulfur (and sometimes selenium or phosphorus) to achieve excellent free-machining characteristics. It is designed as the martensitic counterpart to the austenitic free-machining grade 303.

The sulfur inclusions act as internal chip breakers during machining, allowing for high cutting speeds, superior surface finishes, extended tool life, and reduced production costs. Unlike 303, 416 is a hardenable martensitic steel, meaning it can be heat treated to achieve a wide range of strength and hardness levels after machining. This combination makes it the ideal "soft-machining and hard-service" material for parts requiring both precision machinability and the mechanical properties of a hardened stainless steel.

Product parameters


meterSpecification for 416 (UNS S41600)Notes / Significance
Key FeatureFree-Machining Martensitic Grade. Offers excellent machinability and can be hardened by heat treatment.The primary choice for high-volume production of precision parts requiring hardness.
Common DesignationsUNS S41600, AISI 416, EN 1.4005, JIS SUS416, GB Y1Cr13The "Y" in some designations indicates free-machining (易切削).
Chemical Composition (Typical wt.%)C: ≤ 0.15
Cr: 12.0 - 14.0
S: 0.15 - 0.35 (Key additive)
P: ≤ 0.06 (may be added)
Mn: ≤ 1.25
Si: ≤ 1.00
High sulfur content is critical for free-machining properties but impacts other characteristics.
Mechanical Properties (Condition Dependent)Annealed (Machinable): Hardness: ≤ 262 HB; Tensile: ~550 MPa
Hardened & Tempered: Hardness: up to 40 HRC; Tensile: 690-1350 MPa
Can be supplied soft for machining, then heat treated for service.
Physical PropertiesDensity: 7.75 g/cm³
Modulus of Elasticity: 200 GPa
Magnetism: Ferromagnetic (Magnetic)
Standard for martensitic steels. Magnetic in all conditions.
Key Standards (Plate/Bar)ASTM A895 (Free-Machining Stainless Steel Plate, Sheet, and Strip)
ASTM A582 (Free-Machining Stainless Steel Bars)
A895 is the direct standard for free-machining plate.
Common ApplicationsScrews, nuts, bolts, shafts, gears, valve parts, pump components, firearm parts, and any component requiring extensive machining and subsequent hardening.The quintessential material for high-volume CNC machining of hardened components.

Surface selection

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Packaging and transportation

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FAQ

Q:What about your price? 
A:Our price is very competitive because we are a factory. Feel free to contact us if you are interested in our products. 

Q:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.

Q:What product information do I need to provide?
A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase. 

Q:Does the product have quality inspection before loading? 
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we
accept the third party inspection absolutely. 

Q:How about the delivery time? 
A:Within 3-15 days after we confirm you requirement. 

Q:What is your terms of payment ?
A:T/T, L/C at sight, Cash, Western Union are all accepted if you have other payment,please contact me. 

Q: Do you provide samples? 
A:Yes,we could offer the sample for you to test but please pay freight fee.

Q:How do we trust your company? 
A:We are a specialized company focusing on global steel trading and supply chain services. Our mission is to provide high-quality, multi-specification, and one-stop steel products and solutions to customers worldwide.

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