Detailed Introduction
Model :AISI420/2Cr13/X20Cr13/1.4021/X20Cr13/SUS420JI/12X12/S42000
Application : stainless steel
Content :
Equivalent Steel with exact or nearest equivalents
|
Grade |
C |
Mn |
P |
S |
Si |
Cr |
|
420 |
≤0.15 |
≤1.00 |
≤0.040 |
≤0.030 |
≤1.00 |
12.0-14.0 |
AISI 420 Description :
ASTM AISI 420 stainless steel is a martensitic stainless steel with certain wear resistance and corrosion resistance, and high hardness. It is suitable for all kinds of precision machinery, bearings, electrical, equipment, instruments, meters, transportation tools, household appliances, etc. It is mostly used to manufacture parts that are resistant to atmospheric, water vapor, water and oxidizing acid corrosion.
Features and applications:
AISI 420 stainless steel, 420 stainless steel is 420 "cutting tool grade" martensitic steel, similar to the earliest stainless steel such as Brinell high chromium steel. 420 has a certain degree of wear resistance and corrosion resistance, high hardness, and its price is the lower category of stainless steel balls, and is suitable for working environments that generally require stainless steel. 420 stainless steel is suitable for all kinds of precision machinery, bearings, electrical, equipment, instruments, meters, transportation tools, household appliances, etc. It is mostly used to manufacture parts that are resistant to atmospheric, water vapor, water and oxidizing acid corrosion.
|
Response to Heat Treatment of 420
|
|||
|
TypeA
|
Heat Treatment TemperatureB °F (°C), min
|
Quenchant
|
Hardness HRC, min |
|
403 |
1750 (955) |
AIR |
35 |
|
410 |
1750 (955) |
AIR |
35 |
|
414 |
1750 (955) |
OIL |
42 |
|
420 |
1825(995) |
AIR |
50 |
|
S42010 |
1850(1010) |
OIL |
48 |
|
431 |
1875(1020) |
OIL |
40 |
|
440A |
1875(1020) |
AIR |
55 |
|
440B |
1875(1020) |
OIL |
56 |
|
440C |
1875(1020) |
AIR |
58 |
|
A Samples for testing shall be in the form of a section not exceeding 3⁄8 in. (9.50 mm) in thickness.
|
|||
|
B Temperature tolerance is 625°F (14°C).
|
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Mechanical properties
l Tensile strength σb (MPa): quenched and tempered, ≥635
l Conditional yield strength σ0.2 (MPa): quenched and tempered, ≥440
l Elongation δ5 (%): quenching and tempering, ≥20
l Reduction of area ψ (%): quenching and tempering, ≥50
l Impact energy Akv (J): quenching and tempering, ≥63
l Hardness: annealing, ≤223HB; quenching and tempering, ≥192HB
Solar Special Steel International Limited
Contact Person :Wendy
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Email:ss@solarsteel.cn
