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SAE 8620 Alloy Steel Round Bar with High Hardenability, Good Weldability, and Cold Strain Plasticity

Minimum Order Quantity	1 Ton
Price	US $720-1,350 / Ton

Product Details

Diameter Range	6-630mm	Material Standard	AISI SAE 8620
Chemical Composition C	0.17-0.23%	Chemical Composition Si	0.17-0.37%
Chemical Composition Mn	0.6-0.95%	Chemical Composition Cr	0.4-0.7%
Chemical Composition Mo	0.20-0.30%	Tensile Strength	≥980 MPa
Yield Strength	≥785 MPa	Elongation	≥9%
Reduction Of Area	≥40%	Impact Energy	≥47 J
Density	7.86 G/cm3	Modulus Of Elasticity	210 X 10^3 N/mm2
Hot Forming Temperature	1150-850°C
Highlight	High Hardenability SAE 8620 Steel Round Bar , Good Weldability Alloy Steel Round Bar , Cold Strain Plasticity 1.6523 Steel Round Bar

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Product Description

Alloy AISI SAE 8620 Steel 1.6523 21NiCrMo2 Sncm220 Round Bar

SAE 8620H alloy steel round bar is a low carbon nickel chromium molybdenum alloy with excellent carburizing properties, formability, and weldability. This widely used carburizing alloy offers high strength case and core toughness, supported by chromium and molybdenum for superior surface hardness and wear resistance.

Key Features

Excellent machinability performance
Superior cold strain plasticity
Good weldability characteristics
High hardenability properties

International Standards Equivalents

Designation	Brand Name	Ravne No.	Mat. No.	DIN	EN	AISI
20NCD2	769	1.6523	21NiCrMo2	20NiCrMo2	8620	8620

Chemical Composition (Weight %)

C	Si	Mn	Cr	Mo	Ni	V	W	Others
0.20	max. 0.40	0.80	0.53	0.20	0.55	-	-	-

Detailed Specifications

20NCD2 is a hardenable chromium, molybdenum, nickel low alloy steel specifically designed for carburizing applications to develop case-hardened components with excellent wear characteristics.

Primary Applications

Gears, shafts, bearings, piston rings, ring gears, crankshafts, and other applications requiring a hard carburized case with a tough core. Widely used in transmission systems, tractor motors, and automotive components.

Physical Properties

Property	Value
Modulus of Elasticity	210 x 10³ N/mm²
Density	7.86 g/cm³

Heat Treatment Guidelines

Treatment	Temperature	Cooling
Case Hardening	880-980°C	Oil (water), hot bath 160-250°C
Carburizing	880-980°C	Oil (water), hot bath 160-250°C
Direct Hardening	880-980°C	Oil, hot bath 160-250°C
Core Refining	860-900°C / 780-820°C	Oil, hot bath 160-250°C
Tempering	150-200°C	Air

Available Stock Sizes

Round bar diameters: 12-380mm

Available in various conditions including pre-hardened, hot rolled, annealed, quenched and tempered, with surface conditions ranging from black, pre-machined, grinding, to polished finishes.

Quality Assurance

We source materials exclusively from government-owned steel mills to ensure consistent quality. Our ISO 9001 certified quality management system guarantees competitive products that meet demanding specifications.

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