May 28, 2020

Stainless Steel GX4CrNi13-4 (EN 1.4317)

GX4CrNi13-4 is one type martensitic stainless steel casting grade with 12 Chromium and 4 Nickel in casting standard of EN 10283. It’s same as stainless steel CA6NM (UNI J91540) in ASTM A743, ASTM A352 and ASTM A487 standard. It’s one “400” series Martensitic Chromium Nickel stainless steel with general high strength corrosion resistant.

GX4CrNi13-4 Equivalent Stainless Steel material grade:
ASTM A352 Grade CA6NM, UNS J91540.
ASTM A743 Grade CA6NM, UNS J91540.
ASTM A487 Grade CA6NM, Class A.
ASTM A487 Grade CA6NM, Class B.
ASTM A757 Grade E3N.

Reference Casting Standards:

DIN EN 10283 – Corrosion resistant steel castings; German and English version pr EN 10283:2018
BS EN 10283:2019 Corrosion resistant steel castings

GX4CrNi13-4 (EN 1.4317) Physical Propertyies:
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

Martensitic stainless steel castings can be produced in Casting Quality Industrial:

  • Sand Casting
  • Shell Casting
  • Lost Form Casting
  • Precision Lost Wax 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.

GX4CrNi13-4 (EN 1.4317) Chemistry Property:

Casting StandardEN10283
Stainless Steel GradeGX4CrNi13-4
EN Number1.4317
Carbon (max)0.06
Manganese (max)1.00
Silicon (max)1.00
Sulfur (max)0.025
Phosphorus ( max)0.035
Molybdenum (max)0.70

GX4CrNi13-4 (EN 1.4317)  Heat treatment process:
Quenching and solution annealing, per different requirement, Three heat treatment processes are required in EN 10283: QT1, QT2, QT3

GX4CrNi13-4 (EN 1.4317) Stainless Steel Mechanical Property

Stainless Steel GradeHeat TreatmentThickness


Test At room temperature
Tensile Test, minImpact Test
NameNumberSymbolQuenching (+Q) or Sol Annealing (+AT)Tempering (+T)Rp0.2






Temperature °F [°C]
+QT31000-1050660-680   560-6203005007001650
1.     +Q means: Quenching in air or liquid.

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

3.     1MPa = 1 N/MM2.


GX4CrNi13-4 Welding conditions:
Preheated temperature 20 to 200 °C, post weld heat treatment need temper heat treatment.

GX4CrNi13-4 Typical Casting Application

  •  Pump Castings.
  • Valve Castings.
  • Water Turbines castings: Francis Blade, Runner Crown, and Wicket Gates.
  • Heat Exchange System.


Cast Stainless Steel GX4CrNi13-4 VS CA6-NM VS E3N

GX4CrNi13-4 is same as CA6-NM in final application, it’s chemistry is similar.

Stainless Steel GradeChemical Composition / Physical Properties %
(max, except where range is given)
ASTM A352 A743 A487CA6NM0.
ASTM A757E3N0.

ASTM A487 Grade CA6NM (Class A or B) and ASTM A757 Grade E3N also require total content of residual elements 0.50 (Cu 0.50, W 0.10, V 0.05)

Stainless Steel GradeTensile Strength minYield Strength, minElongation, minReduction of Area, minHardness maxImpact Requirement Charpy V-Notch Ft-lbf [J]
StandardGradeUNSKsiMPaKsiMPa%%HBAverageSingleTemperature °F [°C]
ASTM A743CA6NMJ91540110755805501535285
ASTM A352CA6NMJ91540110-135760-93080550153520 [27]15[20]-100 [-73]
ASTM A487CA6NM Class A110-135760-930805501535
ASTM A487CA6NM Class B100690755151735255
ASTM A757E3N11076080550153520 [27]15[20]-100 [-73]

Metal Castings

Stainless Steel , ,

Leave a Reply

Your email address will not be published. Required fields are marked *

error: Alert: Thanks for your interesting, but Article is protected ! You can click the Top Right email!