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42CrMoS4+QT (1.7227) Steel Properties
The tables below summarize 42crmos4 steel (1.7227 material) properties, and specification including chemical composition, mechanical properties, hardness, heat treatment, etc.
42CrMoS4V Meaning
42CrMoS4V “V” stands for “Vergütet”, which means Quenched and Tempered “+QT”.
Chemical Composition
42crmos4 steel chemical composition is listed in the table below based on cast analysis.
| Chemical Composition (cast analysis), % | ||||||||
| Standard | Steel Grade (Steel Number) | C | Si, ≤ | Mn | P, ≤ | S | Cr | Mo |
| EN 10088-3 | 42CrMoS4 (1.7227) | 0,38-0,45 | 0,40 | 0,60-0,90 | 0,025 | 0,020-0,040 | 0,90-1,20 | 0,15-0,30 |
Mechanical Properties
42CrMoS4+QT (42CrMoS4V) material mechanical properties are listed in the following tables including yield strength (yield stress), tensile strength, Charpy-V-notch impact, etc.
Notes:
- 1 MPa = 1 N/mm2
- 1 GPa = 1 kN/mm2
| Mechanical properties at room temperature for 42CrMoS4+QT (42CrMoS4V) | |||||||
| Standard | Steel Grade (Steel Number) | Upper yield strength, Mpa (ksi), ≥ | Tensile strength, Mpa (ksi) | Elongation after fracture, %, ≥ | Reduction, %, ≥ | Charpy-V-notch Impact, J , ≥ | Ruling section, diameter (d) or flat thickness (t) |
| EN 10088-3 | 42CrMoS4 (1.7227) | 900 (130) | 1100-1300 (160-188) | 10 | 40 | – | d ≤ 16 mm t ≤ 8 mm |
| 750 (108) | 1000-1200 (145-174) | 11 | 45 | 35 | 16 mm < d ≤ 40 mm 8 mm < t ≤ 20 mm | ||
| 650 (94) | 900-1100 (130-160) | 12 | 50 | 35 | 40 mm < d ≤ 100 mm 20 mm < t ≤ 60 mm | ||
| 550 (80) | 800-950 (116-138) | 13 | 50 | 35 | 100 mm < d ≤ 160 mm 60 mm < t ≤ 100 mm | ||
| 550 (80) | 750-900 (109-130) | 14 | 55 | 35 | 160 mm < d ≤ 250 mm 100 mm < t ≤ 160 mm | ||
Rockwell Hardness
Limiting values for the “C” scale Rockwell hardness for 42CrMoS4 (1.7227) material with different hardenability requirements.
Note:
- +H: “normal hardenability”;
- +HH and +HL: “with restricted hardenability scatter bands”
| Standard | Steel Grade (Steel Number) | Distance in mm (in.) from quenched end | HRC Hardness, (min-max) | ||
| +H grade | +HH grade | +HL grade | |||
| EN 10088-3 | 42CrMoS4 (1.7227) | 1,5 (0.059) | 53-61 | 56-61 | 53-58 |
| 3 (0.118) | 53-61 | 56-61 | 53-58 | ||
| 5 (0.197) | 52-61 | 55-61 | 52-58 | ||
| 7 (0.276) | 51-60 | 54-60 | 51-57 | ||
| 9 (0.354) | 49-60 | 52-60 | 49-56 | ||
| 11 (0.433) | 43-59 | 48-59 | 43-54 | ||
| 13 (0.512) | 40-59 | 46-59 | 40-53 | ||
| 15 (0.591) | 37-58 | 44-58 | 37-51 | ||
| 20 (0.787) | 34-56 | 41-56 | 34-49 | ||
| 25 (0.984) | 32-53 | 39-53 | 32-46 | ||
| 30 (1.181) | 31-51 | 38-51 | 31-44 | ||
| 35 (1.378) | 30-48 | 36-48 | 30-42 | ||
| 40 (1.575) | 30-47 | 36-47 | 30-41 | ||
| 45 (1.772) | 29-46 | 35-46 | 29-40 | ||
| 50 (1.969) | 29-45 | 34-45 | 29-40 | ||
| Maximum hardness for products to be supplied in the “treated to improve shearability (+S)” or “soft annealed (+A)” condition | |||
| Standard | Steel Grade (Steel Number) | HBW in +S condition | HBW in +A condition |
| EN 10088-3 | 42CrMoS4 (1.7227) | ≤ 255 | ≤ 241 |
| HBW for +S: Depending on the chemical composition of the cast, and on the dimensions, particularly in the case of the +HH-grades, soft annealing may be necessary. | |||
Heat Treatment
Quenching temperature: 820-880 °C (1500-1616°F), austenitizing period: at least 30 min (guide value), quenching agent: oil or water. The temperature at the lower end of the range is generally suitable for hardening in water, and the temperature at the upper end is suitable for hardening in oil.
Tempering temperature: 540-680 °C (1000-1255°F), tempering period: at least 60 min (guide value).
End quench test: 850 ± 5 °C.
Applications
Automotive and aircraft parts with high toughness, such as axles, shafts, gears, tyres, rods, crankshafts, screws, connecting and push rods, etc.
42CrMoS4 Equivalent Material
42CrMoS4V, 42CrMoS4 material (1.7227 steel) equivalent to US ASTM AISI SAE, Germany DIN, British BSI, France NF, ISO, Japanese JIS and Chinese GB standard. (For reference)
| 42CrMoS4 Equivalent Grade | |||||||||||||||
| European Union | US | China | Japan | ISO | |||||||||||
| Standard | Grade (Steel Number) | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade | ||||||
| EN 10083-3 | 42CrMoS4 (1.7227) | AISI SAE; ASTM A29/A29M | 4140 | GB/T 3077 | 42CrMo | JIS G4053 | SCM440 | ISO 683-18 | 42CrMoS4 | ||||||
Related Materials: 42CrMo4 (1.7225), 5160 Steel, 410 Stainless Steel, 1045 Steel, 100Cr6 steel, 1.4462 Duplex Stainless Steel, Q235 Steel, Q345 Steel
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Source :- theworldmaterial dot com
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