Steel TRIP690-BH vs TRIP690-HR
Steel · TRIP690 temper comparison
TRIP690-BH and TRIP690-HR are two conditions of the same steel grade, TRIP690: BH (2 % pre-strained + paint-bake) versus HR (hot rolled). The chemistry is identical, so every difference below comes from the condition. TRIP690-BH is the stronger of the two: yield strength 580 MPa (84.1 ksi) against 440 MPa (63.8 ksi) for TRIP690-HR, about 32% more; tensile strength follows at 760 MPa (110 ksi) vs 710 MPa (103 ksi). In exchange, TRIP690-HR is the more ductile: elongation 24% versus 20% for TRIP690-BH, and TRIP690-BH is harder (223 HB vs 205 HB).
TRIP690-BHChoose it when strength drives the design.
TRIP690-HRChoose it when the part is bent, formed or impact-loaded.
TRIP690-BH vs TRIP690-HR: 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.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 205 GPa29.7 Msi · Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 165 GPa23.9 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) 1,425°C2,597 °F · Liquidus Temperature 1,500°C2,732 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 45 W/m·K26 BTU/hr·ft·°F · 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 250 J/g107 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -40°C-40 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 8 % IACS · Electrical Resistivity 2.2×10⁻⁷ Ω·m8.66 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V
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) 31 MJ/kg13,328 BTU/lb · Embodied Carbon (primary production) 2.4 kg CO₂/kg · Embodied Water 55 L/kg6.6 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.
TRIP690-BH vs TRIP690-HR — frequently asked
Is TRIP690-BH stronger than TRIP690-HR?
Yes. TRIP690-BH has a typical yield strength of 580 MPa (84.1 ksi) against 440 MPa (63.8 ksi) for TRIP690-HR — about 32% more. Tensile strength is 760 MPa (110 ksi) vs 710 MPa (103 ksi).
Which condition does FabDigit quote by default, BH or HR?
CR is the default TRIP690 condition in the FabDigit quote flow (neither BH nor HR). 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 TRIP690-BH over TRIP690-HR?
Pick TRIP690-BH when strength drives the design. Pick TRIP690-HR when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in TRIP690-BH and TRIP690-HR 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.