What is chrome steel 1.4021 QT800 bar?

If you are looking for high-strength, wear-resistant stainless steel bars for industrial and engineering applications, we can provide reliable and consistently high-quality 1.4021 QT800 stainless steel bars.

 

What material is 1.4021 QT800 bars ?

1.4021, also known as X46Cr13 or martensitic stainless steel, is widely recognized for its exceptional hardness, high tensile strength, and moderate corrosion resistance, making it an ideal choice for components requiring precision machining and long-term durability. The 1.4021 QT800 bars, after quenching and tempering, typically achieve a hardness of HRC 50-55 and a tensile strength of ≥800 MPa, maintaining structural integrity under heavy loads and abrasive conditions.

 

What material is 1.4021 QT800 equivalent to?

1.4021 QT800 is a quenched and tempered martensitic stainless steel equivalent to AISI 420, X20Cr13, and 420S29. It is often designated as X20Cr13+QT800, providing high strength, good corrosion resistance in non-chloride environments, and a tensile strength of 800 MPa.

 

1.4021 QT800 Chemical Composition of 1.4021 (X20Cr13), %

C	Si	Mn	P	S	N	Cr	Cu	Mo	Ni	Ti
0,16 - 0,25	≤ 1,00	≤ 1,50	≤ 0,04	≤ 0,03	-	12,0 - 14,0	-	-	-	-

 

Mechanical Properties of 1.4021 +QT800

Property	Typical Value
Condition	Quenched and Tempered (+QT800)
Tensile Strength Rm (MPa)	750 – 950
Yield Strength Rp0.2 (MPa)	≥ 600
Hardness (HB)	220 – 270
Hardness (HRC)	~ 25 – 32
Elongation A5 (%)	≥ 12
Impact Toughness KV (J)	≥ 20
Density (g/cm³)	7.7
Modulus of Elasticity (GPa)	~ 200

 

What material is 1.4021 QT700?

1.4021 QT700 (X20Cr13) is a martensitic stainless steel with high strength, good polishability, and moderate corrosion resistance, supplied in a quenched and tempered condition for improved ductility and hardness. It is widely used in hydraulic, automotive, and cutlery applications for components requiring wear resistance, such as pump shafts, fasteners, and gears.

 

What is the difference between 1.4021 +QT800 and 1.4021 +QT700?

The main difference between 1.4021 +QT800 and 1.4021 +QT700 lies in their tensile strength and hardness after heat treatment. Compared to QT700 (tensile strength 700-850 MPa, yield strength >500 MPa), QT800 has a higher minimum tensile strength (800-950 MPa) and a higher yield strength (>600 MPa), thus offering better wear resistance.

 

Applications of 1.4021 QT800 bars

Mechanical Engineering & Automotive: Used for high-stress, wear-resistant parts like spindles, crankshafts, gears, fasteners, studs, and nuts.
Fluid Handling & Hydraulics: Ideal for pump shafts, valve parts, piston rods, and fittings due to its strength and resistance to moderate, non-chloride environments.
Cutting & Medical Tools: Used for cutlery blades, shear blades, and surgical instruments due to its excellent polishability.
Consumer & Industrial Appliances: Employed in washing machine parts, agitators, and various kitchen appliances.

 

1.4021 Stainless Steel Round Bar Supplier

Our 1.4021 QT800 bars are manufactured using precision forging, controlled quenching, and tempering processes, ensuring a uniform microstructure, excellent dimensional accuracy, and a smooth surface finish. To guarantee product quality, each batch undergoes chemical composition analysis, tensile and hardness testing, surface defect inspection, and dimensional checks, and is supplied with a complete material test certificate (MTC, EN 10204 3.1). We can also arrange third-party inspections by SGS, BV, or TÜV to ensure complete traceability and customer confidence.

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With extensive export experience, our 1.4021 QT800 bars have been exported to European, UK, Southeast Asian, and Middle Eastern markets, serving demanding industrial clients.