Steel TRIP Steel-HR vs TRIP Steel TRIP780
Steel · TRIP Steel temper comparison
TRIP Steel-HR and TRIP Steel TRIP780 are two conditions of the same steel grade, TRIP Steel: HR (hot rolled) versus TRIP780. The chemistry is identical, so every difference below comes from the condition. TRIP Steel TRIP780 is the stronger of the two: yield strength 490 MPa (71.1 ksi) against 460 MPa (66.7 ksi) for TRIP Steel-HR, about 7% more; tensile strength follows at 820 MPa (119 ksi) vs 750 MPa (109 ksi). TRIP Steel TRIP780 is harder — 242 HB against 223 HB for TRIP Steel-HR — which matters for wear surfaces and threads.
TRIP Steel TRIP780Choose it when strength drives the design, or when surface hardness matters.
TRIP Steel-HR vs TRIP Steel TRIP780: 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.
TRIP Steel-HRTRIP Steel TRIP780
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 205 GPa29.7 Msi · Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 7.8 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,450°C2,642 °F · Liquidus Temperature 1,500°C2,732 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.5 µm/m·K6.9 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -60°C-76 °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) -0.65 V · Corrosion Resistance 10 / 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: Brazeability / Solderability 55 / 100 · Polishability 45 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 30 MJ/kg12,898 BTU/lb · Embodied Carbon (primary production) 2.3 kg CO₂/kg · Embodied Water 45 L/kg5.4 gal/lb · Typical Recycled Content 25%
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.
TRIP Steel-HR vs TRIP Steel TRIP780 — frequently asked
Is TRIP Steel TRIP780 stronger than TRIP Steel-HR?
Yes. TRIP Steel TRIP780 has a typical yield strength of 490 MPa (71.1 ksi) against 460 MPa (66.7 ksi) for TRIP Steel-HR — about 7% more. Tensile strength is 820 MPa (119 ksi) vs 750 MPa (109 ksi).
Which condition does FabDigit quote by default, HR or TRIP780?
CR is the default TRIP Steel condition in the FabDigit quote flow (neither HR nor TRIP780). 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.
Which is easier to machine, TRIP Steel-HR or TRIP Steel TRIP780?
TRIP Steel-HR. Its machinability rates fair (38/100) against poor (32/100) for TRIP Steel TRIP780.
Ready to make it?
Upload a CAD file and FabDigit prices the part in TRIP Steel-HR and TRIP Steel TRIP780 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.