440B stainless steel
Name: martensitic stainless steel
Standard: AISI, ASTM
Model: 440B
UNS Number: S44003
● 440B features and applications:
440B over 440A stainless steel, high hardness, high toughness than 440C steel. 440B stainless steel for cutting tools, measuring tools and bearings, valves. Suitable bayonet blade material.
● 440B chemical composition ①:
Carbon C: 0.75 ~ 0.95
Manganese Mn: ≤ 1.00
Si Si: ≤ 1.00
Chromium Cr: 16.0 ~ 18.0
Ni-Ni ②: -
Phosphorus P: ≤ 0.04
Sulfur S: ≤ 0.03
Mo Mo: ≤ 0.75
Note: ① single value unless otherwise stated herein, are the highest value; ② pipe technology for some time, some types of austenitic stainless steel containing nickel must be slightly higher than the values shown in the table; ③ free; ④ the highest amount of Ta containing 0.10%; ⑤ the highest content of 0.75%; ⑥ the highest content of 0.70%
Name: martensitic stainless steel
Standard: AISI, ASTM
Model: 440B
UNS Number: S44003
● 440B features and applications:
440B over 440A stainless steel, high hardness, high toughness than 440C steel. 440B stainless steel for cutting tools, measuring tools and bearings, valves. Suitable bayonet blade material.
● 440B chemical composition ①:
Carbon C: 0.75 ~ 0.95
Manganese Mn: ≤ 1.00
Si Si: ≤ 1.00
Chromium Cr: 16.0 ~ 18.0
Ni-Ni ②: -
Phosphorus P: ≤ 0.04
Sulfur S: ≤ 0.03
Mo Mo: ≤ 0.75
Note: ① single value unless otherwise stated herein, are the highest value; ② pipe technology for some time, some types of austenitic stainless steel containing nickel must be slightly higher than the values shown in the table; ③ free; ④ the highest amount of Ta containing 0.10%; ⑤ the highest content of 0.75%; ⑥ the highest content of 0.70%
