Material Notes:
Alloy 416 is a martensitic, free-machining, chromium steel alloy that is generally considered to be the first free-machining stainless steel. It has the highest machinability of any stainless steel at about 85% of that of a free-machining carbon steel. Martensitic stainless steels were designed to be hardenable by heat treatment and also corrosion resistant.
Applications: Electrical motors
,Nuts and bolts
, Pumps
, Valves
, Automatic screw machine parts
, Washing machine components
, Studs
, Gears
Corrosion Resistance: High sulfur, free-machining grades like Alloy 416 are unsuitable for marine or other chloride exposure
UNS S41600, ASME SA194, ASTM A194, ASTM A314, ASTM A473, ASTM A581, ASTM A582, FED QQ-W-423, MIL SPEC MIL-S-862, SAE J405(51416), DIN 1.4005, UNI X 12 CrS 13, B.S. 416 S 21, martensitic, ISO 683/13 7
| Chemical Composition Limits |
| Weight% |
C |
P |
Si |
Mn |
S |
Cr |
Fe |
Se |
| Alloy 416 Type 1 |
0.15 max |
0.060 max |
1 max |
1.25 max |
0.40 max |
11.50-13.50 |
bal |
0.18-0.35 |
| Alloy 416 Type 2 |
0.15 max |
0.060 max |
1 max |
2.50 max |
0.40 max |
11.50-13.50 |
bal |
- |
| Typical Mechanical Properties |
| Material |
Tempering Temp °F (°C)
|
0.2 % Yield Strength (Mpa) |
Tensile Strength (Mpa) |
% Elongation in 2" |
% Reduction of Area |
Hardness Brinell |
| Alloy 416 1" round bar, hardened 1800 °F (982°C) oil quench, tempered one hour |
300 (149) |
1034 |
1344 |
10 |
40 |
390 |
| Alloy 416 1" round bar, hardened 1800 °F (982°C) oil quench, tempered one hour |
500 (260) |
979 |
1276 |
13 |
45 |
375 |
| Alloy 416 1" round bar, hardened 1800 °F (982°C) oil quench, tempered one hour |
700 (371) |
1007 |
1310 |
13 |
48 |
390 |
| Alloy 416 1" round bar, hardened 1800 °F (982°C) oil quench, tempered one hour |
900 (482) |
896 |
1158 |
14 |
50 |
341 |
| Alloy 416 1" round bar, hardened 1800 °F (982°C) oil quench, tempered one hour |
1000 (538) |
793 |
1000 |
15 |
50 |
300 |
| Alloy 416 1" round bar, hardened 1800 °F (982°C) oil quench, tempered one hours |
1100 (593) |
689 |
862 |
17 |
53 |
262 |
| Alloy 416 1" round bar, hardened 1800 °F (982°C) oil quench, tempered one hours |
1200 (650) |
586 |
758 |
18 |
55 |
225 |
