Steel GX3Ni36-A vs GX3Ni36-SR
Steel · GX3Ni36 temper comparison
GX3Ni36-A and GX3Ni36-SR are two conditions of the same steel grade, GX3Ni36: A (solution annealed) versus SR (stress relieved). The chemistry is identical, so every difference below comes from the condition. GX3Ni36-SR is the stronger of the two: yield strength 235 MPa (34.1 ksi) against 205 MPa (29.7 ksi) for GX3Ni36-A, about 15% more. In exchange, GX3Ni36-A is the more ductile: elongation 30% versus 27% for GX3Ni36-SR, and GX3Ni36-SR is harder (128 HB vs 120 HB).
GX3Ni36-AChoose it when the part is bent, formed or impact-loaded.
GX3Ni36-SRChoose it when strength drives the design.
GX3Ni36-A vs GX3Ni36-SR: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Shear Modulus 55 GPa8 Msi · Bulk Modulus 105 GPa15.2 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 8.1 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °F · Liquidus Temperature 1,450°C2,642 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Same in both: Specific Heat Capacity 515 J/kg·K0.12 BTU/lb·°F · Latent Heat of Fusion 275 J/g118 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.35 V · Corrosion Resistance 25 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Castability 50 / 100 · Brazeability / Solderability 65 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 90 MJ/kg38,693 BTU/lb · Embodied Carbon (primary production) 7 kg CO₂/kg · Embodied Water 200 L/kg24 gal/lb · Typical Recycled Content 45%
Strength versus weight
Yield strength against density for every steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
GX3Ni36-A vs GX3Ni36-SR — frequently asked
Is GX3Ni36-SR stronger than GX3Ni36-A?
Yes. GX3Ni36-SR has a typical yield strength of 235 MPa (34.1 ksi) against 205 MPa (29.7 ksi) for GX3Ni36-A — about 15% more. Tensile strength is 445 MPa (64.5 ksi) vs 425 MPa (61.6 ksi).
Which condition does FabDigit quote by default, A or SR?
F is the default GX3Ni36 condition in the FabDigit quote flow (neither A nor SR). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
When should I choose GX3Ni36-A over GX3Ni36-SR?
Pick GX3Ni36-A when the part is bent, formed or impact-loaded. Pick GX3Ni36-SR when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in GX3Ni36-A and GX3Ni36-SR side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.