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Alloy 410/410S/410HT Stainless Steel Solid Round Bars Diameter 4-800 mm Any Length below 10m
Introduction
Alloy 410 is the basic, general purpose martensitic stainless steel that is used for highly stressed parts and provides good corrosion resistance plus high strength and hardness. Alloy 410 contains a minimum of 11.5% chromium which is just sufficient enough to demonstrate corrosion resistance properties in mild atmospheres, steam, and many mild chemical environments. It is a general purpose grade that is often supplied in the hardened but still machineable condition for applications where high strength and moderate heat and corrosion resistance are required. Alloy 410 displays maximum corrosion resistance when it’s been hardened, tempered, and then polished.
Alloy 410 HT is the basic, general purpose, heat treated version of Type 410. It used for general purpose, where corrosion is not severe.
Alloy 410S is a low carbon, non–hardening modification of Alloy 410 and contains 12% chromium martensitic stainless steel. The low carbon and a small alloy addition minimize austenite formation at high temperatures 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.
Applications
Applications requiring moderate corrosion resistance and high mechanical properties are ideal for Alloy 410/ 410HT. Examples of applications that frequently used Alloy 410/ 410HT include:
Cutlery
Steam and gas turbine blades
Kitchen utensils
Bolts, nuts, screws
Pump and valve parts and shafts
Mine ladder rugs
Dental and surgical instruments
Nozzles
Hardened steel balls and seats for oil well pumps
Examples of applications that frequently used Alloy 410S include:
Petroleum Refining and Petrochemical Processing
Columns
Distillation trays
Heat exchangers
Towers
Ore Processing
Mining machinery
Thermal Processing
Annealing boxes
Partitions
Quenching racks
Gate valves
Press plates
Steel Grade | 410/410HT/410S | Application | Mentioned above |
Shape | Round Bar | Standard | GB, ASTM, DIN,JIS |
Dimension | Φ4-800 mm; length below 10m | Surface | Black, Bright, Polished, Peeled |
Technique | Cold drawn; Hot rooled; Forged | Ultrasonic Test | 100% UT Passed |
Delivery Condition
Diameter (mm) | Length | |
Cold drawn | 4-60 | Any length below 10 meters |
Peeled | 30-100 | |
Grinded | 4-600 | |
Turned | 130-800 | |
Hot Rolled | 20-280 | |
Hot Forged | 130-800 |
Standards:
JIS G4303: SUH410/SUS410S
ASTM/ASME: UNS S41000/ UNS S41008
EURONORM: X12Cr13/ X6Cr13
DIN: 1.4006/ 1.4000
Corrosion Resistance of 410/410HT:
Good corrosion resistance to atmospheric corrosion, potable water, and to mildly corrosive environments
Its exposure to everyday activities (sports, food preparation) is generally satisfactory when proper cleaning is performed after exposure to use
Good corrosion resistance to low concentrations of mild organic and mineral acids
Welding Characteristics
Readily welded by all standard methods
To reduce the risk of cracking, it is suggested to pre-heat the work piece to 350 to 400oF (177 to 204oC)
Post weld annealing is recommended to retain maximum ductility
Heat Treatment
The proper hot work range is 2000 to 2200oF (1093 to 1204oC)
Do not work this material below 1650oF (899oC)
Resistance of 410S
Oxidation Resistance
Good oxidation resistance.
Can be used in continuous service up to 1300°F (705°C).
Scaling becomes excessive above 1500°F (811°C) in intermittent service.
Corrosion Resistance
Corrosion resistance of 410S stainless steel is similar to type 410.
Resists corrosion in atmospheric conditions, fresh water, mild organic and mineral acids, alkalis and some chemicals.
Exposure to chlorides in everyday activities (e.g., food preparation, sports activities, etc.) is satisfactory when proper cleaning is performed after exposure to use.
Processing of 410S
Heat Treatment
The alloy can not be hardened by heat treatment. It is annealed between 1600 – 1650°F (871 – 899°C), and then air cooled to relieve cold working stresses. 410S should not be exposed to temperatures above 2000°F (1093°C), due to embrittlement. If large grains are found after annealing mildly cold-worked material, the annealing temperature should be decreased to 1200 – 1350°F (649 – 732°C).
Welding
410S is generally considered to be weldable by the common fusion and resistance techniques. Special attention should be given to avoid brittle weld fractures during fabrication; this includes minimizing discontinuities, maintaining low weld heat input, and occasionally warming the part somewhat before forming. 410S is generally considered to have slightly poorer weldability than the most common ferritic stainless steel grade 409. A major difference can be attributed to the addition of alloy, to control hardening which results in the need for higher heat input during welding.
Chemical Properties:
C | Mn | Si | P | S | Cr | Ni | |
410/410HT | 0.15max | 1.00max | 1.00max | 0.04max | 0.03max | 11.5-13.5 | 0.50max |
410S | 0.08max | 1.00max | 1.00max | 0.04max | 0.03max | 11.5-14.5 | 0.60max |
Mechanical Properties:
Grade | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
410/410HT | 65(450) | 30(205) | 20 | 217 | 96 |
410S | 64.4(444) | 42(290) | 33 | 183 | 75 |
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