W.Nr. 1.4002, DIN X7CrAl13, AISI 405 precision stainless steel strips
AISI 405 is a 12% chromium steel designed to be used in the as-welded condition.
Unlike other 12% chromium steels, it is not subject to a great deal of hardening through air cooling form high temperatures.
Designations
AISI 405, UNS S40500
W.Nr. 1.4002, DIN 1.4002
GB 0Cr13Al
Chemical composition ( in weight % )
Grade | C | Si | Mn | P | S | Cr | Ni | Al |
DIN X7CrAl13 | 0.08 max | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 11.50- 14.50 | 0.50 max | 0.1- 0.3 |
Applications
Commonly used for annealing boxes, steam nozzles, quenching racks, partitions and other fabrications that cannot
be annealed after welding.
Machinability
Soft and ductile, 405 can be easily machined using most standard practices.
Experienced machinists comment that 405 machines similarly to 4130 alloy steel.
Forming
405 can be easily spun, drawn and formed using common forming procedures.
Welding
405 can be welded using shielded fusion and resistance techniques.
Oxyacetylene welding is not recommended.
Use 405 Cb electrodes that contain columbium rather than aluminum to control hardening.
Post weld annealing will maximize ductility.
Forging
Soak at 1500-1600°F (817-871°c) and then quickly increase to 1900-2050°F(1038-1121°c).
Do not remain at this temperature as the result will be excessive grain growth.
Do not work below 1500 F(816°c). After forging, air cool and anneal.
Annealing
Soak at 1200-1400°F (649-760°c), air cool.
Hardening
While this alloy does not respond appreciably to heat treatment, soaking at 1800-1850°F (982-1010°c) followed by
oil quenching will increase mechanical properties.
Physical Data
Density (lb / cu. in.) 0.279
Specific Gravity 7.72 Specific Heat (Btu/lb/Deg F - [32-212 Deg F]) 0.11
Thermal Conductivity 416
Modulus of Elasticity Tension 29