Hot Rolled SAE J404 AISI 8620h Round Alloy Steel Bar 20CrNiMo Case-Hardening Carburizing Flat Square Metal Iron Rod for Automotive Gears

• Warranty: 1year
• Type: Seamless
• Technique: Hot Rolled
• Model NO.: 8620H
• Material: Alloy Steel
• Surface Treatment: Black
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Tensile Strength: 1100MPa
• Hardness: 350-580hv
• Diameter: 3-1200mm or as Customized
• Length: 10-12000mmor as Customized
• Temper: Anneal,Normalizing,Quenched,Tempered
• Yield Strength: 1200MPa
• Equivalent Grade: 36CrNiMo4,AISI 984,G43400,32crmov12-10
• Transport Package: Standard Seaworthy Packaging
• Specification: 10-1020MM
• Trademark: XINYUANXING
• Origin: Wuxi
• HS Code: 7304112000
• Production Capacity: 50010tons Per Year

Product Description

Product Description

Hot Rolled SAE J404 AISI 8620H Round Alloy Steel Bar 20CrNiMo Case-hardening Carburizing Flat Square Metal Iron Rod For Automotive Gears

I. Core Basic Information SAE 8620H steel bar (also known as AISI 8620H, UNS H86200) is a Cr-Ni-Mo low-alloy, case-hardening (carburizing) steel bar, specified for controlled hardenability (the 'H' grade).
1. Chemical Composition

Element	C	Si	Mn	Cr	Ni	Mo	P (max)	S (max)
%	0.17-0.23	0.15-0.35	0.60-0.95	0.35-0.65	0.35-0.65	0.15-0.25	0.035	0.040

Item	Details
Grade Standard	American SAE Standard (SAE J404/J405), classified as Alloy Structural Steel
Grade Interpretation	- 43: Designation for Ni-Cr-Mo (Nickel-Chromium-Molybdenum) alloy series- 20: Average carbon content ≈ 0.20% (0.18-0.23%)- H: Hardenability guaranteed grade, meeting the requirements of hardenability curves
Executive Standards	SAE J404 (Alloy Steel Bars), SAE J405 (Forgings), ASTM A322 (Alloy Structural Steel Bars)
Core Properties	Medium-carbon alloy structural steel, suitable for carburizing/quenching and tempering treatments. It features high strength, good toughness, excellent hardenability, and superior weldability, ideal for mechanical parts bearing medium loads

II. International Grade Equivalents (High-Frequency Demand in Foreign Trade)

Country/Region	Standard Number	Corresponding Grade	Remarks
China	GB/T 3077-2015	20CrNiMoA	"A" denotes high-grade quality steel, with highly matched composition/performance
Germany	DIN EN 10083-3	20NiCrMo2-2	Commonly used grade for EU CE certification
Japan	JIS G4053-2016	SNCM220	Preferred grade in the automotive industry
UK	BS EN 10083-3	20NiCrMo2	Technically equivalent to the German grade
France	NF EN 10083-3	20NCD2	Designation in the French standard system

Key Notes for Foreign Trade Application:
Standard Compatibility: SAE 8620H is widely recognized in North American markets, while its equivalents (e.g., 20CrNiMoA, 20NiCrMo2-2) are more commonly used in Asia, Europe, and other regions. Clarify grade equivalents in contracts to avoid supply discrepancies.
Hardenability Requirement: The "H" suffix emphasizes guaranteed hardenability. Specify relevant test standards (e.g., SAE J406) in purchase orders to ensure product performance meets technical specifications.
Application Scenarios: Typical uses include gears, shafts, connecting rods, and other mechanical components in automotive, industrial machinery, and aerospace fields. Highlight these application advantages in product promotion materials for targeted marketing.
Shafts, axles, and crankshafts requiring high strength
Bolts, nuts, and fasteners for critical applications
Gears and transmission components in heavy machinery
Power Generation
Steam turbine rotors and shafts
Valve stems and sleeves in high-temperature steam systems
Defense Industry
Barrels for firearms requiring balance between strength and impact resistance at low temperatures
Components for heavy weapons systems
Other Applications
Structural components in aerospace applications
Tooling components requiring high strength and dimensional stability
Available Forms
Round bars: Diameters from 1 mm to 2000 mm
Flat bars and plates: Various thicknesses and widths
Hexagonal and square bars: Standard and custom sizes
Forged components: Rings, cylinders, and discs
Comparison with 32CrMoV12-28
32CrMoV12-10 is primarily an alloy structural steel used for high-strength components
32CrMoV12-28 (also known as AISI H10) is a hot work tool steel used for dies and molds
Main difference: Mo and V content (slightly higher in 32CrMoV12-28) and intended application
Purchasing Considerations
Quality Standards: Ensure material conforms to DIN EN 10083-3
Delivery Condition: Typically supplied in quenched and tempered state
Surface Finish: Available in black, rough machined, peeled, or ground finishes
Custom Sizes: Most suppliers offer cutting to required lengths
Summary
32CrMoV12-10 is a premium alloy structural steel bar known for its exceptional strength, toughness, and resistance to high temperatures. It's ideal for applications where reliability under extreme conditions is essential. Whether for industrial machinery, power generation, or defense applications, this steel provides the performance needed for critical components.
 

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FAQ

Q1: Why choose us?
A: Our company, as an internationally experienced and professional supplier, has been engaged in steel business for more than ten years. We can provide a variety of steel products with high quality to our clients.

Q2: Can you provide OEM/ODM service? 
A: Yes. Please feel free to contact us for more details.

Q3:What is your terms of payment?
A: 100% T/T advance.
30% T/T and balance against copy of documents.
30% T/T advance, balance L/C at sight.

Q4: Can we visit your factory? 
A: Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.

Q5: Can you provide sample? 
A: Yes. Sample is free for regular sizes, but the buyer needs to pay freight cost.

Q6: How long is your delivery time?
A: Regular lead time is 15 to 30 days after receiving deposit.