April 25, 2021

Alloy Steel G17CrMo5-5 (EN 1.7357)

G17CrMo5-5 is one type low alloy cast steel in casting standard of EN 10293 and EN 10213. It’s same as ASTM A217 WC6.  castingquality.com
Casting Methods in Casting Quality Industrial:

  • Sand Casting
  • Investment Casting (Lost Wax Casting, Precision Casting)

G17CrMo5-5 Equivalent Steel material grade: www.castingquality.com
JIS 5151 SCPH21
Chinese grade ZG15CrMo

Impeller Casting, investment Casting

Our Services

  1. Sand Casting

    Casting Quality focus on Metal Parts industry, we provide professional service in Metal Casting field.

    Sand Casting is a popular metal form method, are suitable for all materiel, such as grey iron, ductile iron, malleable iron, carbon steel, stainless steel, aluminum and bronze.

  2. Investment Casting

    also named as precision lost wax casting, mainly suitalbe for carbon steel and stainless steel parts. We also provide grey iron and ductile iron and aluminum and bronze parts by investment casting. It can achieve the best appearance with good tolerance

  3. Shell Casting

    Shell casting method is a good option to replace investment casting and sand casting. the quality is better than sand casting parts, suitable for bulk production.

  4. CNC Machining

    CNC Milling, CNC turning with 5 xix CNC center, we provide precision machining for all castings based on customers design drawings.

  5. CAD Design

    Mechanical Design service based on customers requirement, our software is Solidworks and AutoCAD.

  6. Tools/Mold Design

    Mould design and production will be served for metal casting ad plastic injection industry. Based on our more than 10 years experience, we supply professional molds for our customers in Europe and North American.

Reference Casting Standards:

BS EN 10293:2015 Steel castings. Steel castings for general engineering uses
DIN EN 10293:2015-04 Steel castings – Steel castings for general engineering uses

EN 10213 Part 2: Steel grades

G17CrMo5-5 (EN 1.7357) Physical Properties:
Density: 7.7 kgs/dm3
Specific heat: 460 J(kg-k) at 20 °C
Thermal conductivity:   26 W/(m-K) at 50 °C
27 W/(m-K) at 100 °C
Mean thermal expansion:    10.5 10-6k-1 from 20°C up to 100°C
11 10-6k-1 from 20°C up to 100°C
12 10-6k-1 from 20°C up to 100°C

G17CrMo5-5 (EN 1.7357) Chemistry Property:

Steel GradeG17CrMo5-5 (EN 1.7357) Chemical Composition / Physical Properties %
(max, except where range is given)
EN 10293 G17CrMo5-51.73570.15-0.200.50-1.000.600.0200.0251.00-1.500.45-0.65
EN 10213 G17CrMo5-51.73570.15-0.200.50-1.000.600.0200.0201.00-1.500.45-0.65
For Casings of ruling Thickness <28mm, %0.030 S is permitted

G17CrMo5-5 (EN 1.7357) Heat treatment process: www.castingquality.com
Quenching and Temper

G17CrMo5-5 (EN 1.7357) Steel Mechanical Property  castingquality.com

Stainless Steel GradeHeat TreatmentThickness


Test At room temperatureTest at elevated Temperature
Tensile Test, minImpact TestTensile Test
Rp0.2 MPa min
SymbolQuenching (+Q)Tempering (+T)Rp0.2






Temperature KVJ200














EN 10293 G17CrMo5-5 (EN 1.7357)+QT920-960680-730<100315490-6902027Not required
EN 10213 G17CrMo5-5 (EN 1.7357)+QT920-960680-730<100315490-6902027250230215200190175160

1.     +Q means: Quenching in air or liquid.

2.     +AT means: Solution annealing + quenching in water.

3.     1MPa = 1 N/MM2.

G17CrMo5-5 (EN 1.7357) Welding conditions:
Preheated temperature 150 to 250 °C, interpass temperature 350°C, post weld heat treatment 650 °C min.


G17CrMo5-5 (EN 1.7357) Typical Casting Application


  • Pump Castings.
  • Valve Castings.
  • Turbines Castings: Francis Blade, Runner Crown, and Wicket Gates.
  • Steam Boilers
  • Heat Exchanger System.

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