Steel A47 M3210-ANN vs A47 M3210 ANN-HDG
Steel · A47 M3210 temper comparison
A47 M3210-ANN and A47 M3210 ANN-HDG are two conditions of the same steel grade, A47 M3210: ANN (annealed) versus ANN-HDG (annealed + hot-dip galvanized). The chemistry is identical, so every difference below comes from the condition. Both yield at about 240 MPa — the mechanical properties are the same, and the difference is in how the stock is processed and what it is certified to (annealed versus annealed + hot-dip galvanized). A47 M3210-ANN runs hotter in service (425°C vs 200°C continuous). On the shop floor, A47 M3210-ANN machines more easily (very good vs good) and A47 M3210-ANN welds better (poor vs not recommended).
A47 M3210-ANNChoose it when the part sees heat, or when the part is machined in volume.
A47 M3210-ANN vs A47 M3210 ANN-HDG: 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.
A47 M3210-ANNA47 M3210 ANN-HDG
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elongation at Break
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Same in both: Elastic (Young's) Modulus 170 GPa24.7 Msi · Shear Modulus 66 GPa9.6 Msi · Bulk Modulus 118 GPa17.1 Msi · Poisson's Ratio 0.26 · Tensile Strength (Ultimate) 360 MPa52.2 ksi · Yield Strength (0.2% offset) 240 MPa34.8 ksi · Shear Strength 285 MPa41.3 ksi · Hardness, Brinell 130 HB · Hardness, Rockwell B 74 HRB · Hardness, Vickers 137 HV
Physical
Density and transition temperatures.
Same in both: Density 7.3 g/cm³0.26 lb/in³ · Melting Point (Solidus) 1,135°C2,075 °F · Liquidus Temperature 1,230°C2,246 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 51 W/m·K29.5 BTU/hr·ft·°F · Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12 µm/m·K6.7 µin/in·°F · Latent Heat of Fusion 220 J/g94.6 BTU/lb · Min Service Temperature -50°C-58 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 5 % IACS · Electrical Resistivity 3.4×10⁻⁷ Ω·m13.4 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: Castability 75 / 100 · Brazeability / Solderability 60 / 100 · Polishability 50 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb · Embodied Carbon (primary production) 1.9 kg CO₂/kg · Embodied Water 45 L/kg5.4 gal/lb · Typical Recycled Content 85%
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.
A47 M3210-ANN vs A47 M3210 ANN-HDG — frequently asked
What is the difference between A47 M3210-ANN and A47 M3210 ANN-HDG?
A47 M3210-ANN and A47 M3210 ANN-HDG are two conditions of the same steel grade, A47 M3210: ANN (annealed) versus ANN-HDG (annealed + hot-dip galvanized). The chemistry is identical, so every difference below comes from the condition. Both yield at about 240 MPa — the mechanical properties are the same, and the difference is in how the stock is processed and what it is certified to (annealed versus annealed + hot-dip galvanized).
Which condition does FabDigit quote by default, ANN or ANN-HDG?
ANN is the default A47 M3210 condition in the FabDigit quote flow. 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, A47 M3210-ANN or A47 M3210 ANN-HDG?
A47 M3210-ANN. Its machinability rates very good (80/100) against good (55/100) for A47 M3210 ANN-HDG; for welding the order is A47 M3210-ANN first (poor, 28/100) then A47 M3210 ANN-HDG (not recommended, 12/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in A47 M3210-ANN and A47 M3210 ANN-HDG 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.