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410S 1.4000 Stainless Steel







410S UNS S41008 stainless steel is a low carbon, non–hardening version of the general purpose 12% chromium martensitic stainless steel. The low carbon and a small alloy addition minimize austenite formation at high temperature which restricts the ability of 410S to harden. 410S remains soft and ductile even when rapidly cooled from elevated temperature. This helps prevent cracking when the alloy is exposed to high temperature or during welded. 410S is completely ferritic in the annealed condition.

Alloy 410S is a low carbon, non–hardening modification of Alloy 410 the general purpose 12% chromium martensitic stainless steel. The low carbon and a small alloy addition minimize austenite formation at high temperature which restricts the alloys ability to harden. 410S remains soft and ductile even when rapidly cooled from above the critical temperature. This non-hardening characteristic helps prevent cracking when the alloy is exposed to high temperatures or welded. 410S is completely ferritic in the annealed condition. It exhibits adequate corrosion resistance similar to 410 and good oxidation resistance.

410S Steel is a non-hardening modification of 410. A small titanium addition minimizes austenite formation at high temperature, thereby restricting the alloy's ability to harden. This non-hardening characteristic retards formation of hardening cracks when the steel is welded. The alloy is completely ferritic in the annealed condition. 410S is particularly useful for annealing box, quenching rack, oxidation-resistant partition and other high temperature units. 410S is Ferro-magnetic.




Applications
Standard
Chemical Analysis
Corrosion Resistance
Oxidation Resistance
Physical Properties
Mechanical Properties
Formability
Welding
Heat Treatment
Surface Preparation
Machining
304/304L/304LN/304H Tubing and Pipe



Key Words: ASME SA240, ASTM A176, ASTM A240, ASTM A473, DIN 1.4001, JIS SUS 410 S, B.S. 403 S 17, martensitic

Component    Wt. %  
C Max 0.08  
Cr 12.5  
Fe 85  
Mn Max 1  
P Max 0.04  
S Max 0.03  
Si Max 1  

Material Notes: 
16 mm diameter bar, heated to 980�C for 30 min., oil quenched, test temperature plus 28�C temper for 2 hours

Physical Properties Metric English Comments
Density 7.8 g/cc 0.282 lb/in�  

Mechanical Properties
Hardness, Knoop 464 464  Converted from Rockwell C hardness
Hardness, Rockwell C 45 45  
Hardness, Vickers 446 446  Converted from Rockwell C hardness
Tensile Strength, Ultimate 1525 MPa 221000 psi  
Yield Strength 1225 MPa 178000 psi  at 0.2% offset
Elongation at Break 14.5 % 14.5 %  in 50 mm
Modulus of Elasticity 200 GPa 29000 ksi  Estimated based on comparison with similar stainless steel

Electrical Properties
Electrical Resistivity 5.7e-005 ohm-cm 5.7e-005 ohm-cm  at 20�C, 0.000108 Ohm-cm at 650�C
Magnetic Permeability 700 - 1000 700 - 1000  annealed condition at RT

Thermal Properties
CTE, linear 20�C 9.9 �m/m-�C 5.5 �in/in-�F  from 0-100�C (32-212�F)
CTE, linear 250�C 11 �m/m-�C 6.11 �in/in-�F  at 0-315�C (32-600�F)
CTE, linear 500�C 11.5 �m/m-�C 6.39 �in/in-�F  at 0-540�C, 11.7 �m/m-C at 0-650�C
Specific Heat Capacity 0.46 J/g-�C 0.11 BTU/lb-�F  from 0-100�C (32-212�F)
Thermal Conductivity 24.9 W/m-K 173 BTU-in/hr-ft�-�F  at 100�C; 28.7 W/m-K at 500�C
Melting Point 1480 - 1530 �C 2700 - 2790 �F  
Solidus 1480 �C 2700 �F  
Liquidus 1530 �C 2790 �F  
Maximum Service Temperature, Air 705 �C 1300 �F  Continuous Service
Maximum Service Temperature, Air 815 �C 1500 �F  Intermittent Servic


Related References:
1. Superferritic Stainless Steel
2. Ferritic Ferrite Stainless Steel
3. Ferritic Stainless Steel Grades Comparison Table
4. Compared with the ferritic stainless steel, duplex stainless steel vulnerable


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