Steel H13 Q&T 50-52 HRC vs H13 Stress Relieved
Steel · H13 temper comparison
H13 Q&T 50-52 HRC and H13 Stress Relieved are two conditions of the same steel grade, H13: Q&T 50-52 HRC (wear-biased temper) versus Stress Relieved. The chemistry is identical, so every difference below comes from the condition. H13 Q&T 50-52 HRC is the stronger of the two: yield strength 1,570 MPa (228 ksi) against 510 MPa (74 ksi) for H13 Stress Relieved, about 3.1 times as much; tensile strength follows at 1,900 MPa (276 ksi) vs 750 MPa (109 ksi). In exchange, H13 Stress Relieved is the more ductile: elongation 24% versus 9% for H13 Q&T 50-52 HRC, and H13 Q&T 50-52 HRC is harder (550 HV vs 220 HV).
H13 Q&T 50-52 HRCChoose it when strength drives the design.
H13 Stress RelievedChoose it when the part is bent, formed or impact-loaded.
H13 Q&T 50-52 HRC vs H13 Stress Relieved: 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.
H13 Q&T 50-52 HRCH13 Stress Relieved
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 210 GPa30.5 Msi · Shear Modulus 81 GPa11.7 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.3 · Hardness, Rockwell B 95 HRB
Physical
Density and transition temperatures.
Same in both: Density 7.8 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °F · Liquidus Temperature 1,480°C2,696 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 24.5 W/m·K14.2 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 10.9 µm/m·K6.1 µin/in·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Min Service Temperature -30°C-22 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 3.3 % IACS · Electrical Resistivity 5.2×10⁻⁷ Ω·m20.5 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.58 V · Corrosion Resistance 22 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Weldability
Same in both: Machinability 45 / 100 · Formability (cold) 20 / 100 · Brazeability / Solderability 30 / 100 · Polishability 78 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 34 MJ/kg14,617 BTU/lb · Embodied Carbon (primary production) 2.6 kg CO₂/kg · Embodied Water 75 L/kg9 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.
H13 Q&T 50-52 HRC vs H13 Stress Relieved — frequently asked
Is H13 Q&T 50-52 HRC stronger than H13 Stress Relieved?
Yes. H13 Q&T 50-52 HRC has a typical yield strength of 1,570 MPa (228 ksi) against 510 MPa (74 ksi) for H13 Stress Relieved — about 3.1 times as much. Tensile strength is 1,900 MPa (276 ksi) vs 750 MPa (109 ksi).
Which condition does FabDigit quote by default, Q&T 50-52 HRC or Stress Relieved?
Annealed is the default H13 condition in the FabDigit quote flow (neither Q&T 50-52 HRC nor Stress Relieved). 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 H13 Q&T 50-52 HRC over H13 Stress Relieved?
Pick H13 Q&T 50-52 HRC when strength drives the design. Pick H13 Stress Relieved when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in H13 Q&T 50-52 HRC and H13 Stress Relieved 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.