6150 Alloy
6150 is an electric furnace melt of chrome vanadium steel with a high resistance to vibratory stress and medium hardness. 6150 is typically bought to meet chemistry requirements rather than physical requirements. It is most commonly used in heavy machinery parts, shafts, gears, and high strength studs. Alro carries 6150 in 6150 DCF Annealed and 6150 HR Annealed.
Alloy Steel AISI 6150 is a chromium vanadium type spring steel, similar to alloy steel 5150. The addition of vanadium, though small, is effective to achieve greater hardness. AISI 6150 has low distortion properties and is easily heat treated. SAE 6150 steel grade is suitable for oil hardening and tempering.
6150 is typically supplied in the rolled condition. When in the oil hardened and tempered condition, SAE 6150 spring steel demonstrates spring characteristics that shows excellent resistance to abrasion and shock. 6150 that has been hardened offers excellent toughness and shock resistance which make it ideal for springs or parts exposed to stress, vibration and shock.
Worldwide equivalents of grade 6150 (USA: AISI, ASTM, UNS)
| Steel : 6150 | USA | Standard : ASTM A29/A29M |
Cross reference table for Steel 6150 ( AISI, ASTM, UNS) and its European equivalent 51CrV4 (1.8159) ( EN )
| EU EN |
USA - |
Germany DIN,WNr |
Japan JIS |
France AFNOR |
England BS |
Italy UNI |
Spain UNE |
China GB |
Sweden SS |
Poland PN |
Czechia CSN |
Russia GOST |
Inter ISO |
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| 51CrV4 (1.8159) |
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| CHEMICAL COMPOSITION | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| C 0.48 – 0.53% | Cr 0.80 – 1.10% | Fe 97.09 – 97.72% | P ≤ 0.035% | Si 0.15 – 0.30% | |||||
| S ≤ 0.040% | V ≥ 0.15% | ||||||||
| PHYSICAL PROPERTIES | ||||||
|---|---|---|---|---|---|---|
| Density (lbs/cubic in) | Electrical conductivity (% IACS) | Thermal conductivity (W/m-K) | Specific heat capacity (BTU/lb-°F) | Thermal expansion (µm/m-K) | Melting Point (°F) | |
| 0.284 | – | 46.6 | 0.11 | – | – | |
| MECHANICAL PROPERTIES | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| PROPERTY | MINIMUM | MAXIMUM | |||||||
| Yield Strength Range (Mpa) | 1160 | – | |||||||
| Tensile Strength Range (Mpa) | 1200 | – | |||||||
| Elongation | 14.5% | – | |||||||
| Hardness, Brinell | 352 | – | |||||||
| Modulus of Elasticity (ksi) (E): 29700 | |||||||||
| Machineability General Index: 55% | |||||||||
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