17CrNi6-6 | DIN 1.5918 Quality Case Hardening Steel
As low carbon case hardened steel in EN10084,17CrNi6-6 steel contains 1.4-1.7% chromium and 1.4-1.7% nickel which give this steel grade excellent mechanical properties.
After carburizing, quenching and tempering heat treatment, 17CrNi6-6 steel obtains high strength, excellent toughness and wear resistance, as well as good hardenability and high temperature resistance.
17CrNi6-6 steel is widely used in the manufacture of mechanical parts, forgings, forging dies and high-performance bearings. Specific applications include automotive engine gears, crankshafts, connecting rods, bearings, reducers and transmission shafts, etc.
17CrNi6-6 STEEL CHEMICAL COMPOSITION
| Grade | C | Si | Mn | P | S | Cr | Ni |
| 17CrNi6-6/1.5918 | 0.14-0.20 | ≤ 0.4 | 0.5-0.9 | ≤0.025 | ≤0.035 | 1.4-1.7 | 1.4-1.7 |
17CrNi6-6/DIN 1.5918 Steel Heat Treatment
- Normalizing:850-880°C,air cooling
- Annealing:650-700°C,furnace cooling,hardness below 229HBW.
- Carburizing:880-980°C
- Core-hardening:830-870°C
- Case-hardening:780-820°C
- Tempering:150-200°C
17CrNi6-6 Steel Hardness requirements under different delivery conditions
- Treated for shearability:≤255HBW
- Treated for soft annealed:≤229HBW
- Treated for strength: 175-229HBW
- Treated for ferrite/pearlite structure:156-207HBW
17CrNi6-6 Steel Hardenability Limits
Jominy Quenching Test Curve For 17CrNi6-6 Steel
Quenching at 870°C
X:Distance from quenched end,in mm
Y:Hardness,HRC
1: HH level
2: HL level
3: H level
| Distance from quenched end mm | 1.5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 | |
17CrNi6-6+H | HRC Max | 47 | 47 | 46 | 45 | 43 | 42 | 41 | 39 | 37 | 35 | 34 | 34 | 33 |
| HRC Min | 39 | 38 | 36 | 35 | 32 | 30 | 28 | 26 | 24 | 22 | 21 | 20 | 20 | |
17CrNi6-6+HH | HRC Max | 47 | 47 | 46 | 45 | 43 | 42 | 41 | 39 | 37 | 35 | 34 | 34 | 33 |
| HRC Min | 42 | 41 | 39 | 38 | 36 | 34 | 32 | 30 | 28 | 26 | 25 | 25 | 24 | |
17CrNi6-6+HL | HRC Max | 44 | 44 | 43 | 42 | 39 | 38 | 37 | 35 | 33 | 31 | 30 | 29 | 29 |
| HRC Min | 39 | 38 | 36 | 35 | 32 | 30 | 28 | 26 | 24 | 22 | 21 | 20 | 20 | |
Quality Certification for 17CrNi6-6 Steel
A material test report(Inspection Certificate EN 10204 3.1) will be provided, documenting the following:
1.Chemical analysis
2.Mechanical properties
3.Surface hardness
4.Non Metallic Inclusion
5.Heat Treatment Process
6.Grain size
7.Forging ratio
8.NDE test method/criteria
Supply Size & Condition For 17CrNi6-6/DIN 1.5918
- Round Bars: Dia.80 – 1,000mm as Forged
- Flat / Square Bars: Thickness Max.800mm
- Shafts, Rollers, Blocks: Customized or According to Drawing
- Rolled Round Bars: Dia.14 – 130mm with UT Assurance
Heat treatment:Quenched and Tempered (+QT), Normalizing (+N), Annealing (+A)
Surface finish:Black / Rough turned / Peeled
17CrNi6-6/1.5918 steel manufacturers and suppliers,supplied with round rods,square/flat bars,rollers,shafts,blocks and forging pieces.
