Overview
SAE/AISI 1095 Steel is one of the highest-carbon steels in the AISI 10XX series, containing approximately 0.90–1.03% carbon. It is renowned for its exceptional hardness, wear resistance, edge retention, and heat treatment capability.
Compared with SAE 1075 and SAE 1060, SAE 1095 can achieve significantly higher hardness after heat treatment, making it ideal for knives, cutting tools, springs, industrial blades, and wear-resistant components.
SAE 1095 is widely used in:
- Knives & Blades
- Industrial Cutting Tools
- Flat Springs
- Saw Blades
- Wear Components
- Scraper Blades
- Agricultural Tools
- Specialty Mechanical Components
Due to its outstanding hardness potential and edge retention, SAE 1095 remains one of the most popular carbon steels for blade manufacturing worldwide.
Material Specification
| Property | Value |
|---|---|
| Material Designation | SAE/AISI 1095 |
| Standard | ASTM / SAE / AISI |
| UNS Number | G10950 |
| Material Family | High Carbon Steel |
| Density | 7.85 g/cm³ |
| Magnetic Property | Magnetic |
| Standard Forms | Strip, Coil, Sheet, Plate, Bar, Wire |
Chemical Composition
| Element | Content (%) |
|---|---|
| Iron (Fe) | Balance |
| Carbon (C) | 0.90–1.03 |
| Manganese (Mn) | 0.30–0.50 |
| Silicon (Si) | ≤0.30 |
| Phosphorus (P) | ≤0.040 |
| Sulfur (S) | ≤0.050 |
The very high carbon content enables outstanding hardness and wear resistance after heat treatment.
Mechanical Properties
Annealed Condition
| Property | Value |
|---|---|
| Tensile Strength | 750–900 MPa |
| Yield Strength | 450–600 MPa |
| Elongation | 6–12% |
| Hardness | 190–255 HB |
| Elastic Modulus | 200 GPa |
Quenched & Tempered Condition
| Property | Value |
|---|---|
| Tensile Strength | 1200–1600 MPa |
| Yield Strength | 900–1300 MPa |
| Hardness | 50–66 HRC |
| Wear Resistance | Outstanding |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | 1370–1450°C |
| Thermal Conductivity | 44 W/m·K |
| Electrical Resistivity | 0.18 μΩ·m |
| Thermal Expansion Coefficient | 10.8 × 10⁻⁶/K |
| Specific Heat Capacity | 486 J/kg·K |
Corrosion Resistance
| Environment | Performance |
|---|---|
| Indoor Environment | Moderate |
| Dry Atmosphere | Moderate |
| Humid Environment | Poor |
| Outdoor Environment | Poor |
| Marine Environment | Very Poor |
| Chemical Environment | Poor |
SAE 1095 is highly susceptible to corrosion and oxidation.
Recommended protective finishes:
- Black Oxide
- Oil Coating
- Phosphate Coating
- Nickel Plating
- Electroless Nickel Plating
- Powder Coating
For knife applications, regular oil maintenance is recommended.
Weldability
| Welding Process | Rating |
|---|---|
| MIG Welding | Poor |
| TIG Welding | Poor |
| Arc Welding | Poor |
| Resistance Welding | Fair |
| Spot Welding | Fair |
Due to its extremely high carbon content, SAE 1095 is generally not recommended for welded structures.
If welding is required:
- Preheat Required
- Controlled Cooling Required
- Post-Weld Heat Treatment Required
Machinability
| Process | Rating |
|---|---|
| CNC Turning | Fair |
| CNC Milling | Fair |
| Drilling | Fair |
| Grinding | Excellent |
| Threading | Fair |
| Broaching | Fair |
Machinability Comparison
| Material | Machinability |
|---|---|
| 1018 | Excellent |
| 1045 | Good |
| 1060 | Moderate |
| 1075 | Moderate |
| 1095 | Fair |
| D2 Tool Steel | Fair |
Machining is generally performed in the annealed condition before heat treatment.
Heat Treatment
Annealing
| Parameter | Value |
|---|---|
| Temperature | 760–815°C |
| Cooling Method | Furnace Cool |
Normalizing
| Parameter | Value |
|---|---|
| Temperature | 815–870°C |
| Cooling Method | Air Cool |
Quenching
| Parameter | Value |
|---|---|
| Temperature | 790–830°C |
| Cooling Medium | Oil |
Tempering
| Parameter | Value |
|---|---|
| Temperature | 150–650°C |
| Purpose | Toughness Adjustment |
Hardness After Heat Treatment
| Condition | Hardness |
|---|---|
| Annealed | 190–255 HB |
| As Quenched | 64–67 HRC |
| Tempered | 50–66 HRC |
SAE 1095 can achieve some of the highest hardness levels among plain carbon steels.
International Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| SAE / AISI (USA) | 1095 |
| ASTM (USA) | ASTM A682 Grade 1095 |
| UNS | G10950 |
| GB/T (China) | T10 / T10A |
| JIS (Japan) | SK95 |
| EN (Europe) | C100E |
| DIN (Germany) | C100 |
| ISO | C100 |
Available Forms
| Product Type | Availability |
|---|---|
| Spring Steel Strip | Yes |
| Cold Rolled Coil | Yes |
| Precision Strip | Yes |
| Steel Plate | Yes |
| Round Bar | Yes |
| Flat Bar | Yes |
| Blade Stock | Yes |
| Wire Rod | Yes |
Typical Applications
Knife Manufacturing
- Hunting Knives
- Utility Knives
- Outdoor Knives
- Industrial Cutting Knives
Blade Manufacturing
- Circular Saw Blades
- Shear Blades
- Scraper Blades
- Slitting Blades
Spring Manufacturing
- Flat Springs
- Retaining Springs
- Mechanical Springs
Agricultural Industry
- Cutting Blades
- Harvesting Components
- Wear Parts
Industrial Machinery
- Wear Plates
- Scrapers
- Cutting Components
Tool Manufacturing
- Specialty Hand Tools
- Precision Cutting Tools
- Mechanical Tool Components
Manufacturing Characteristics
| Manufacturing Process | Rating |
|---|---|
| CNC Turning | Fair |
| CNC Milling | Fair |
| Grinding | Outstanding |
| Heat Treatment | Outstanding |
| Blade Manufacturing | Outstanding |
| Spring Forming | Excellent |
| Waterjet Cutting | Excellent |
| Black Oxide | Excellent |
| Phosphate Coating | Excellent |
Advantages
Exceptional Hardness
Among the hardest plain carbon steels available.
Outstanding Wear Resistance
Excellent for cutting and abrasion applications.
Superior Edge Retention
Ideal for knife and blade manufacturing.
Excellent Heat Treatment Response
Predictable hardening characteristics.
Good Fatigue Strength
Suitable for spring applications.
Cost Effective
Lower cost than many alloy and tool steels.
Limitations
Poor Corrosion Resistance
Requires protective coating or maintenance.
Poor Weldability
Not suitable for welded structures.
Lower Toughness Than Alloy Steels
Can become brittle if improperly heat treated.
Difficult Machining
Generally machined before hardening.
Comparison with Other Carbon Steels
| Property | 1095 | 1075 | 1060 | 1050 | D2 |
|---|---|---|---|---|---|
| Carbon Content | 0.95% | 0.75% | 0.60% | 0.50% | 1.50% |
| Hardness Potential | Exceptional | Outstanding | Excellent | Excellent | Exceptional |
| Wear Resistance | Exceptional | Outstanding | Excellent | Excellent | Exceptional |
| Edge Retention | Outstanding | Excellent | Very Good | Good | Exceptional |
| Toughness | Moderate | Good | Good | Very Good | Moderate |
Comparison with Engineering Materials
| Material | Yield Strength | Hardness Potential | Wear Resistance |
|---|---|---|---|
| SAE 1095 | 900–1300 MPa | 67 HRC | Exceptional |
| SAE 1075 | 800–1100 MPa | 64 HRC | Outstanding |
| SAE 1060 | 650–900 MPa | 62 HRC | Excellent |
| 5160 Spring Steel | 850–1200 MPa | 60 HRC | Outstanding |
| D2 Tool Steel | 1000–1500 MPa | 62 HRC | Exceptional |
| CPM 3V | 1200–1800 MPa | 60 HRC | Outstanding |
Available Surface Finishes
Raw Finishes
- Annealed Finish
- Cold Rolled Finish
- Precision Ground Finish
- Blade Finish
Protective Finishes
- Black Oxide
- Oil Coating
- Phosphate Coating
- Nickel Plating
- Electroless Nickel Plating
Decorative Finishes
- Powder Coating
- Spray Painting
- Electrophoretic Coating (E-Coating)
Frequently Asked Questions (FAQ)
What is SAE 1095 steel?
SAE 1095 is a high-carbon steel known for exceptional hardness, wear resistance, and edge retention.
What is SAE 1095 used for?
Typical applications include:
- Knives
- Industrial Blades
- Springs
- Wear Components
- Agricultural Tools
- Cutting Tools
What is the difference between SAE 1095 and SAE 1075?
| Property | SAE 1095 | SAE 1075 |
|---|---|---|
| Carbon Content | Higher | Lower |
| Hardness | Higher | Lower |
| Wear Resistance | Better | Excellent |
| Toughness | Lower | Better |
Is SAE 1095 good for knives?
Yes. SAE 1095 is one of the most popular carbon steels used in knife manufacturing because of its excellent edge retention.
Can SAE 1095 be heat treated?
Yes. It responds exceptionally well to quenching and tempering.
What hardness can SAE 1095 achieve?
- As Quenched: 64–67 HRC
- Tempered: 50–66 HRC
Is SAE 1095 suitable for springs?
Yes. SAE 1095 spring steel strip is commonly used in high-performance spring applications.
Can SAE 1095 be welded?
Generally no. Welding is difficult due to the high carbon content and risk of cracking.
Why is SAE 1095 widely used for blades?
Because it combines:
- Exceptional Hardness
- Outstanding Edge Retention
- Excellent Wear Resistance
- Good Heat Treatment Response
- Cost Efficiency
making it ideal for cutting applications.
Does GCNOV provide custom manufacturing services for SAE 1095?
Yes. GCNOV provides:
- CNC Machining
- Blade Manufacturing
- Spring Component Production
- Heat Treatment
- Quenching & Tempering
- Precision Grinding
- Black Oxide Finishing
- Prototype Development
- Low-Volume Production
- Mass Production