Polished Surface SAE 8620H Alloy Steel Round Bar with High Hardenability and Good Weldability

最小注文数量	1トン
価格	US $720-1,350 / Ton

商品の詳細

型番	SAE8620H	表面処理	ポリッシュ
仕様	外径6～630mm	生産能力	500トン
化学組成c	0.20	化学組成si	最大。 0.40
化学組成mn	0.80	化学組成CR	0.53
化学組成mo	0.20	化学成分 Ni	0.55
弾性率	210×10^3N/mm2	密度	7.86g/cm3
抗張力	≧980MPa	降伏強さ	≥785Mpa
伸長	≥9%
ハイライト	Polished Surface Alloy Steel Round Bar , High Hardenability SAE 8620 Round Bar , Good Weldability 8620H Steel Bar

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製品の説明

SAE8620H Alloy Solid Round Bar

SAE 8620 is an alloy construction steel with high hardenability, excellent machinability, cold strain plasticity, and good weldability. This low carbon nickel chromium molybdenum alloy offers superior carburized properties, formability, and weldability, making it the most widely used carburizing alloy.

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	-	-	-

Mechanical Properties

Quenching Temperature: 850°C (oil cooled)

Tempering: 200°C (air cooled)

Property	Value
Tensile Strength σb (MPa)	≥980(100)
Yield Strength σs (MPa)	≥785(80)
Elongation δ5 (%)	≥9
Reduction of Area ψ (%)	≥40
Akv (J)	≥47

Physical Properties

Modulus of Elasticity: 210 × 10³ N/mm²

Density: 7.86 g/cm³

Heat Treatment Specifications

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	Oil, hot bath 160-250°C
Core Refining	780-820°C	Oil, hot bath 160-250°C
Tempering	150-200°C	Air

Applications

Widely used in transmission systems, tractor motors, and small-to-medium automotive applications. Ideal for gears, shafts, bearings, piston rings, ring gears, crankshafts, and other components requiring hard carburized cases with tough cores.

Available Sizes

Round Bar Diameter: 12-380mm

Available in various conditions: pre-hardened, hot rolled, annealed, quenched and tempered, with surface conditions including black, pre-machined, grinding, and polish.

Quality Assurance & Services

Our Commitment

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

Value-Added Services

Metal cutting and sizing
Machining (blanking, milling, grinding)
Heat treatment services
Sawing for small or large quantities
Sawing-to-size capabilities

Delivery & Support

We prioritize speedy and timely delivery for all orders, whether raw materials or finished products with machining or heat treatment. Our extensive inventory and efficient logistics ensure shortest possible lead times.