SUS440C High Hardness Stainless Steel Tube

Short Description:

SUS440C high hardness stainless steel pipe have the highest hardness (can reach HRC58 or above), and are mostly used for parts such as molds with corrosion resistance and hardness requirements.

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SUS440C High Hardness Stainless Steel Tube

SUS440C high hardness stainless steel pipe belongs to martensitic stainless steel pipe, and all stainless steel pipe and heat resistant steel pipe have the highest hardness (can reach HRC58 or above), and are mostly used for parts such as molds with corrosion resistance and hardness requirements.

SUS440C high hardness stainless steel tube Quick Details
Type：seamless steel tube
Outside Diameter ：25mm-219mm
Wall thickness：6mm-15.8mm
Length：6000mm、12000m or specified length as required.
Type of End-Finish：Plain End、Beveled End、Treaded
Surface treatment: Tubes will be varnished (Outside only) to prevent rust.
 
Additional Info
Payment Terms：T / T, LC
Port of Shipment：Tianjin,China
Package：According To Per Customers' Require
Marking：Standard + Steel Grade + Size + Heat No + Lot No
Delivery time：Tubes will be completed within 30 days, and urgent delivery time can be discussed.
 
Manufacture
SUS440C high hardness stainless steel tube are manufactured by seamless process.
 
Heat treatment:
1) Annealing, slow cooling at 800-900 ° C;
2) quenching, oil cooling at 1000~1050 °C;
3) Tempering, air cooling at 200 ~ 300 °C.
 
Metallographic organization: The tissue is characterized by martensite type.
 
Chemical Composition of SUS440C

Grade Chemical Composition
C Si Mn P S Cr Mo
SUS440C 0.95-1.20 ≤1.00 ≤1.00 ≤0.040 ≤0.030 16.0-18.0 ≤0.75

Mechanical Properties of SUS440C
Grade Mechanical Properties
Tensile Strength Yield Strength Elongation Hardness
Mechanical Properties 560Mpa 250Mpa 18% 250
 
Characteristics of SUS440C high hardness stainless steel tube:
SUS440C stainless steel tube has high hardness and good wear resistance. When sanding, it has the disadvantage of being relatively viscous and heating up quickly, but it is easier to sand than any carbon steel and it is much easier to cut with a hand saw. The annealing temperature of 440C is very low, the hardness usually reaches HRC56-58, and the corrosion resistance and toughness are very strong.
 
SUS440C VS SUS304
SUS304 is austenitic stainless steel with good plasticity and good cold workability. At the same time, due to its austenitic structure, it is non-magnetic and cannot be adsorbed by magnets. It is difficult to increase its strength by heat treatment, and its corrosion resistance is excellent.
SUS440C is martensitic stainless steel. Its microstructure is martensitic metallurgical structure. Its mechanical strength is higher than that of SUS304, and its mechanical properties can be further enhanced by heat treatment.
 
For performance-determined use, SUS304 is mostly used to make stainless steel daily necessities, containers, etc., while SUS440 is used for manufacturing tools, tools, and other applications requiring high strength and hardness.

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