S8558

Delivery:

Payment:

Means of Payment

For your convenience, we accept multiple payment methods in USD, including PayPal, Credit Card, and wire transfer.

RFQ (Request for Quotations)

It is recommended to request for quotations to get the latest prices and inventories about the part.
Our sales will reply to your request by email within 24 hours.

IMPORTANT NOTICE

1. You’ll receive an order information email in your inbox. (Please remember to check the spam folder if you didn’t hear from us).
2. Since inventories and prices may fluctuate to some extent, the sales manager is going to reconfirm the order and let you know if there are any updates.

Technical Parameter Table: Abrasion Resistant Steel Plate S8558

Product Name: High Hardness Abrasion Resistant Steel Plate
Designation: S8558 (Proprietary/Non-standard)
Similar to: AR400/AR450 (but with higher hardness), JIS G 3104 SS400 (but with specialized treatment)
Key Feature: Optimized for exceptional resistance to abrasive wear.

Parameter Category	Parameter	Value / Description	Notes
Mechanical Properties	Hardness (Brinell), typical	477 – 534 HBW	The “58” in the name typically signifies a target hardness of 550 HBW (approx. 58 HRC). Actual range is usually slightly lower on the Brinell scale.
	Tensile Strength, min	~ 1550 MPa	Very high, derived from its high hardness.
	Yield Strength (Rp0.2), min	~ 950 MPa	Approximate value.
	Elongation (A5)	~ 10% (Typical)	Lower elongation is expected due to the extreme hardness.
Chemical Composition (Typical %)	Carbon (C)	0.30 – 0.50	High carbon for high hardness and wear resistance.
	Manganese (Mn)	0.80 – 1.60	Increases hardenability and strength.
	Silicon (Si)	0.15 – 0.65	Deoxidizer and strengthens ferrite.
	Chromium (Cr)	0.50 – 1.20	Enhances hardenability, improves abrasion and corrosion resistance.
	Molybdenum (Mo)	0.20 – 0.50	Increases hardenability and strength, especially at high tempering temperatures.
	Boron (B)	May be added (trace)	Dramatically increases hardenability, allowing high strength with lower alloy content.
	Phosphorus (P)	≤ 0.025	Impurity, controlled for toughness.
	Sulfur (S)	≤ 0.010	Impurity, controlled for toughness.
Physical Properties	Density	~7.85 g/cm³	Standard for steel.
	Modulus of Elasticity	~200 GPa	Standard for steel.
Processing & Applications	Heat Treatment	Quenched & Tempered (Q&T)	The process used to achieve its high and uniform hardness.
	Weldability	Poor to Fair (Requires Extreme Precaution)	High carbon equivalent makes it prone to cracking. Mandatory pre-heating (often 200-250°C+), controlled interpass temperature, and low-hydrogen electrodes are absolute requirements. Post-heat treatment may be necessary.
	Machinability	Very Poor	Requires specialized hard machining techniques and carbide tools.
	Bendability	Limited	Minimum bend radius is very high relative to plate thickness.
	Typical Applications	– Severe Abrasion Environments – Mining: Truck liners, hopper liners, chutes, excavator buckets – Material Handling: Screw conveyors, wear plates – Construction: Crusher parts, wear strips – Forestry: Debarker parts, chipper knives	Used where the primary failure mode is wear, not structural fracture.