High-Strength Alloy Steel Plates for Heavy-Duty Engineering Applications
EN19 steel plates are chromium-molybdenum alloy steel plates used in applications demanding high strength, toughness, and fatigue resistance. Compared to EN8 and C45, EN19 offers significantly higher mechanical performance, especially under dynamic and impact loading.
At Sharoff Steel Suppliers, EN19 plates are supplied for engineering, machining, and load-critical applications, where plain carbon steels are insufficient and reliability in service is critical.
EN19 is a low-alloy steel containing chromium and molybdenum, which provide:
• Higher tensile and yield strength
• Improved hardenability
• Better fatigue and shock resistance
• Stable performance after heat treatment
EN19 plates are commonly supplied in quenched & tempered (Q&T) or normalized condition, depending on application.
| Element | Typical % |
|---|---|
| Carbon (C) | 0.35 – 0.45 |
| Manganese (Mn) | 0.50 – 0.80 |
| Chromium (Cr) | 0.90 – 1.20 |
| Molybdenum (Mo) | 0.15 – 0.30 |
| Silicon (Si) | ≤ 0.40 |
| Phosphorus (P) | ≤ 0.05 |
| Sulphur (S) | ≤ 0.05 |
Exact limits depend on standard and mill practice. Always verify MTC.
| Property | Typical Value |
|---|---|
| Tensile Strength | 850 – 1000 MPa |
| Yield Strength | ~650 MPa |
| Brinell Hardness (as supplied) | 248 – 302 HB |
• Confirms heat treatment effectiveness
• Indicates suitability for high-load and impact duty
• Helps avoid premature failure in service
• Guides machining and tool selection
| Parameter | EN8 | C45 | EN19 |
|---|---|---|---|
| Steel type | Carbon steel | Medium carbon | Alloy steel |
| Strength | Medium | Medium-high | High |
| Hardenability | Limited | Moderate | Excellent |
| Fatigue resistance | Moderate | Moderate | High |
| Typical use | Fabrication + machining | Machining parts | Heavy-duty components |
👉EN19 is chosen when failure risk cannot be tolerated.
EN19 plates are selected when:
• Components face high stress or impact
• Fatigue resistance is critical
• Heat treatment is required for performance
• Carbon steels (EN8 / C45) are inadequate
EN19 provides strength + toughness, not just hardness.
Heavy Engineering & Machining
• Shafts and crank components
• Gears and pinions
• High-load machined parts
Industrial & Equipment
• Press components
• Tool holders
• Structural parts under dynamic load
Automotive & Off-Highway
• Axles
• Drive components
• Forged and machined plates
EN19 steel plates may be supplied as:
• Normalized – for machining before final treatment
• Quenched & Tempered (Q&T) – for direct high-strength use
Correct condition selection is essential for performance and machinability.
Sharoff Steel Suppliers supplies EN19 steel plates in:
• Plates
• Cut-to-size blocks
• Machining-ready blanks
All supplies are supported with Mill Test Certificates (MTCs).
Before ordering EN19 steel plates, confirm:
• ✅ EN19 grade specification
• ✅ Plate thickness & size
• ✅ Delivery condition (Normalized / Q&T)
• ✅ Required Brinell hardness range
• ✅ Heat treatment standard (if specified)
• ✅ MTC & traceability requirements
Incorrect specification can lead to machining difficulty or in-service failure.
• Reliable sourcing of alloy steel plates
• Consistent hardness and mechanical performance
• Cut-to-size supply to reduce machining waste
• Clear guidance on when EN19 is required vs over-specification
We help customers choose strength where it matters, not by default.
• EN8 Steel Plates
• C45 Steel Plates
• 42CrMo4 Steel Plates
• Abrasion Resistant Plates
Is EN19 stronger than C45 and EN8?
Yes. EN19 offers significantly higher strength, toughness, and fatigue resistance.
Is EN19 suitable for welding?
Welding is possible but requires strict pre-heat and post-heat procedures.
Is EN19 the same as 42CrMo4?
They are closely related alloy steels, but governed by different standards. (Covered on the next page.)
Perfect.
Below is the FINAL, WEBSITE-READY 42CrMo4 STEEL PLATES PAGE, written to sit cleanly after EN19, without duplication, and with plates-focused SEO intent.
This page is international-standard driven, more EPC / export / consultant-friendly than EN19.