• Beschreibung

416 stainless steel is a martensitic, free-machining grade that is widely recognized for its outstanding machinability—the highest among all stainless steels. Designed primarily for applications where complex parts and high production efficiency are required, 416 stainless steel is ideal for automatic screw machines and CNC turning operations. While it offers only moderate corrosion resistance compared to austenitic grades, it provides excellent mechanical strength and can be hardened through heat treatment.

• Chemische Zusammensetzung

	C	Si	Mn	S	P	Cr
416	0.15 max	1.00 max	1.25 max	0.150 max	0.060 max	12.0-14.0

•  Grade Specification Comparison

The following table outlines the grade comparisons for 416 stainless steels:

Grade	AISI	JIS	DIN	EN	BS	ISO
416	UNS S41600	SUS 416	X12CrS13	1.4005	416S21	X12CrS13

•  Mechanical Properties

Tempering Temperature (℃)	Zugfestigkeit (MPa)	Streckgrenze 0.2% Proof (MPa)	Elongation (% in 50mm)	Hardness Brinell (HB)	Impact Charpy V (J)
Annealed *	517	276	30	262	–
Condition T **	758	586	18	248-302	–
204	1340	1050	11	388	20
316	1350	1060	12	388	22
427	1405	1110	11	401	#
538	1000	795	13	321	#
593	840	705	19	248	27
650	750	575	20	223	38
* Annealed properties are typical for Condition A of ASTM A582.
** Hardened and tempered Condition T of ASTM A582 – Brinell Hardness is specified range, other properties are typical only.

•  Surface Finish

2B

BA

NO.1

NO.4

8K

SB

• Delivery Status

Annealed

Solution Annealed / Solution Treated

Cold Drawn / Cold Worked

Hot Rolled

Cold Rolled

Stress Relieved

Quenched and Tempered

Pickled

• Features

Excellent Machinability

→ A free-machining martensitic stainless steel, ideal for high-speed machining such as CNC turning and automatic lathes.

Moderate Corrosion Resistance

→ Performs well in dry or mildly corrosive environments, but not recommended for marine or highly acidic conditions.

Good Mechanical Strength

→ Capable of achieving high strength and hardness through proper heat treatment, suitable for load-bearing parts.

Excellent Heat Treatability

→ Mechanical properties can be tailored via quenching and tempering processes.

Ideal for Complex Precision Parts

→ Widely used for producing bolts, valve stems, gears, and shafts that require high precision and volume machining.

• Shapes

Round bars, coils, plates, flat, pipes/tubes.

• Application

Alloy 416 is generally used for parts that are extensively machined and require the corrosion resistance of a 13% chromium stainless steel. Applications that generally use Alloy 416 include:

Electrical motors

Nuts and bolts

Pumps

Valves

Automatic screw machine parts

Washing machine components

Studs

Zahnräder