AISI 1095 Springs
Coiling Technologies is an ISO 9001 certified custom manufacturer of industrial springs. We create made-to-order sizes for a variety of springs and applications in heavier industries, including oil refining, military equipment, and high-performance vehicle parts.
No matter the demand, our team at Coiling Technologies will deliver reliable, durable industrial products to our customers. We use only high-quality, high-performance materials such as AISI 1095 to manufacture our springs because we know how important they are to your operation.
AISI 1095 Carbon Steel Features & Benefits
AISI 1095 carbon steel, also known as 95 carbon spring steel, is less ductile at a higher hardness and tensile strength. Being cold-rolled, this material yields more strength, making AISI 1095 springs suitable for higher stress conditions.
The benefits of our carbon steel springs include its high strength, usability in high-temperature conditions, and the ability to remain effective over time. 1095 is similar to carbon steel grade 1060, 1075 and 1080. The European equivalent grade standards are DIN 17222 and Japanese standard G4801.
| Technical Specification | AISI 1095 |
|---|---|
| Nominal Composition |
C: 0.90 - 1.03 Fe: 98.38 - 98.8 Mn: 0.30 - 0.50 |
| Density |
0.28 lb./in3 |
| Modulus of Elasticity (E) |
29 x 103 ksi |
| Modulus of Rigidity (G) |
11.6 x 103 ksi |
| Electrical Resistivity |
180 µΩ.cm |
| Thermal Conductivity |
360 Btu/(hr/ft2/in/°F) |
| Min Size |
0.003 in (0.080 mm) |
| Max Temp |
120oC (250oF) |
| Uses |
It is used for high-stress flat springs |
Material Applications
Springs of this material are typically used for suspension in automotive and other industries. 95 carbon steel springs are very commonly used across a wide range of applications and industries.
Some common applications include but are not limited to:
- Anti-roll bars
- High-stress flat springs
- Hot coiled springs
- Vehicle compression and coil springs
- Leaf springs
- Bow springs
Industries Using AISI 1095 Material
When it comes to 95 carbon steel springs, we most commonly serve industries such as automotive and other industrial suspensions. Many different industries can benefit from our springs, even the heaviest industries, and applications. Some of these industries that use our AISI 1095 steel springs include:
- Automotive
- Oil and petroleum
- Military
- Mining
- Agriculture
- Construction
- Defense
Types of Springs Available:
- Custom springs
- Die springs
- Compression springs
- Torsion springs
- Disc springs
- Suspension springs
- Wire forms
- Drawbar springs
- Extension springs
- Wave springs
What Sets Coiling Technologies Apart?
At Coiling Technologies, our customization is unbeatable. We can deliver the part you need, based on your exact specifications. Contact us today, and our experienced team will be happy to help you.
AISI 1095 Springs FAQs
What is AISI 1095 steel and how does its carbon content compare to other spring steels?
AISI 1095 is a high-carbon plain steel with carbon content of approximately 0.90%–1.05%—higher than AISI 1074/1075 (approximately 0.70%–0.80% carbon) and at the upper end of the music wire carbon range. This higher carbon content allows 1095 to achieve greater hardness after heat treatment, contributing to higher strength, good wear resistance, and excellent spring characteristics. It is a classic high-carbon spring steel used across a wide range of spring and tool applications where maximum hardness and good spring return are required.
What spring types are most commonly made from AISI 1095?
AISI 1095 is commonly used for flat springs, leaf springs, clock springs, spiral springs, and stamped spring components. It is also specified for knife blades, cutting tools, and other applications requiring high hardness and wear resistance. In round wire form it competes with music wire for compression and extension spring applications, though music wire (ASTM A228) is more commonly specified for precision round wire springs due to tighter tolerances and superior surface quality.
How does 1095's higher carbon content affect spring performance compared to lower-carbon grades?
Higher carbon content allows 1095 to achieve greater hardness after quenching—up to approximately 60–65 HRC in the fully hardened condition. This high hardness translates to higher tensile and compressive strength, better resistance to permanent deformation (set), and good wear resistance. The trade-off is reduced toughness and ductility: 1095 springs are more susceptible to brittle fracture under impact loading than lower-carbon grades such as 1074/1075. Tempering after hardening is used to trade some hardness for improved toughness, with the specific temper selected to balance the application's strength and impact resistance requirements.
What is the typical hardness range for heat-treated AISI 1095 springs?
After hardening and tempering, AISI 1095 springs are typically processed to 44–56 HRC depending on the temper temperature. Higher temper temperatures (450°F–600°F) yield 44–50 HRC with better ductility; lower temper temperatures (350°F–400°F) yield 52–56 HRC with maximum strength but reduced impact toughness. The specific target is chosen based on the application's load requirements, expected fatigue cycles, impact conditions, and service environment.
Does AISI 1095 offer meaningful corrosion resistance?
No. AISI 1095 is a plain carbon steel with no alloying additions for corrosion resistance. It will rust rapidly when exposed to moisture, salt, or acidic media. Springs made from 1095 for outdoor or wet environments must be protected with a suitable coating such as zinc electroplating, phosphate-and-oil treatment, or powder coating. For applications requiring inherent corrosion resistance, stainless steel, phosphor bronze, or nickel-based alloys should be specified.
What are the common industrial applications for AISI 1095 springs?
AISI 1095 is used in agricultural machinery springs, automotive door and hood mechanisms, industrial machinery flat springs and retaining clips, tool and die components, precision clockwork springs, military equipment components where high strength is required and coating can provide corrosion protection, and folding or locking knife springs where high hardness and consistent spring-back are essential. Its combination of high strength, hardness, and low material cost makes it a versatile choice in non-corrosive or coated-application environments.
