Steel 22MnB5-ANN (Annealed)
Heat-treated state
EN 22MnB5 · GB B1500HS · also Usibor 1500, MS1500
Softest condition, used when severe cold forming, deep drawing or machining precedes austenitizing.
Values for the ANN condition
Other 22MnB5 tempers and conditions
22MnB5 is listed in 5 conditions; see the grade overview at 22MnB5.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ANNThis page Annealed | Softest condition, used when severe cold forming, deep drawing or machining precedes austenitizing. | 330 | 500 | 28 | 145 HB | 8.5 % IACS |
CRDefault Cold rolled | Standard soft blank stock for direct hot stamping and for cold blanking/piercing before the press-hardening line. | 380 | 560 | 22 | 160 HB | — |
Hot rolled | Thicker gauges (roughly 2–6 mm) for chassis and heavy structural hot-stamped parts. | 400 | 600 | 20 | 10 HRC | 8 % IACS |
Press hardened with tailored soft zone | Local ductile zone in a hot-stamped part (heated die, tailored tempering or post-tempering) for controlled crash folding and easier joining. | 450 | 650 | 14 | 20 HRC | 8.5 % IACS |
Press hardened | The in-service condition of hot-stamped B-pillars, bumper beams and roof rails — maximum strength, minimum springback, very low ductility. | 1,100 | 1,500 | 6 | 48 HRC | — |
What is 22MnB5-ANN?
22MnB5-ANN is 22MnB5 heat treated to ANN — softest condition, used when severe cold forming, deep drawing or machining precedes austenitizing. 22MnB5-ANN has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 500 MPa (72.5 ksi) — weaker than 78% of steel grades. Elongation at break is 28% and the elastic modulus is 210 GPa (30.5 Msi). 22MnB5-ANN has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,465°C (2,669 °F). CR is the default condition FabDigit quotes; ANN is available on request or by drawing note.
Advantages
- Ductile — tolerates forming and impact — 28%, better than 89% of steel grades
- Forms and bends easily — 70/100, better than 86% of steel grades
Limitations
- Limited service temperature — 250°C (482 °F), worse than 85% of steel grades
- Low strength — 330 MPa (47.9 ksi), worse than 78% of steel grades
- Poor heat conductor — 34 W/m·K (19.6 BTU/hr·ft·°F), worse than 77% of steel grades
22MnB5-ANN properties
Typical room-temperature values for 22MnB5-ANN; 22 are specific to this condition. Other listed values are 22MnB5 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
22MnB5-ANN has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,465°C (2,669 °F).
Mechanical14
22MnB5-ANN has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 500 MPa (72.5 ksi) — weaker than 78% of steel grades. Elongation at break is 28% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
22MnB5-ANN is rated for continuous service to 250°C (482 °F). It conducts heat at 34 W/m·K (19.6 BTU/hr·ft·°F), worse than 77% of steel grades. Thermal expansion is 12.5 µm/m·K (6.94 µin/in·°F).
Electrical3
22MnB5-ANN conducts electricity at 8.5 % IACS, better than 63% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of 22MnB5-ANN takes about 25 MJ of energy and emits 2.1 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 20%.
Manufacturability7
22MnB5-ANN's machinability is good (60/100, better than 83% of steel grades); weldability very good (70/100); formability very good (70/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 22MnB5-ANN
Is 22MnB5 easy to machine?
Blank, pierce and trim in the soft as-delivered state; after press hardening use laser cutting or CBN/ceramic tooling — conventional drilling and shearing of 1500 MPa martensite is impractical.
Can 22MnB5 be welded?
Resistance spot welding is standard (Al-Si coated requires adapted current/force schedules; Zn coating risks liquid-metal embrittlement); laser welding of Al-Si blanks needs coating ablation at the joint, and any welding softens the martensite in the HAZ.
Can 22MnB5 be formed, bent or molded?
Direct hot stamping: austenitize 900–950 °C for 3–6 min, transfer in <10 s, form and hold in the water-cooled die at >27 °C/s cooling to full martensite; cold forming is limited to the soft delivered state and bend radii after hardening should be ≥3–4 t.
What surface finishes work on 22MnB5?
Al-Si coated parts go straight to phosphate-free pretreatment and e-coat; uncoated hot-stamped parts must be shot blasted to remove scale, and electroplating/acid pickling should be avoided due to hydrogen embrittlement risk.
22MnB5 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| C | 0.19 – 0.25 | 0.22 |
| Si | 0.15 – 0.4 | 0.25 |
| Mn | 1.1 – 1.4 | 1.25 |
| P | ≤ 0.03 | 0.01 |
| S | ≤ 0.01 | 0 |
| Cr | 0.15 – 0.35 | 0.22 |
| Alacid-soluble | 0.02 – 0.06 | 0.04 |
| Tibinds N so that B stays in solution | 0.02 – 0.05 | 0.04 |
| Bhardenability agent | 0 – 0.01 | 0 |
| N | ≤ 0.01 | 0.01 |
| Curesidual | ≤ 0.2 | 0.03 |
| Niresidual | ≤ 0.2 | 0.03 |
| Moresidual/optional | ≤ 0.1 | 0.02 |
| Fe | balance | — |
22MnB5-ANN — frequently asked
What is 22MnB5-ANN used for?
22MnB5-ANN is typically used for A- and B-pillar reinforcements, door-impact beams, roof rails and side-sill reinforcements, bumper beams, tunnel and floor cross-members and front and rear longitudinal rails. In short: workhorse hot-stamping boron.
What is the yield strength of 22MnB5-ANN?
22MnB5-ANN has a typical yield strength of 330 MPa (47.9 ksi) and a tensile strength of 500 MPa (72.5 ksi) — weaker than 78% of steel grades. Strength varies by condition: see the 5 listed tempers.
Is 22MnB5-ANN easy to machine?
Reasonably — machinability is rated good (60/100, better than 83% of steel grades). Blank, pierce and trim in the soft as-delivered state; after press hardening use laser cutting or CBN/ceramic tooling — conventional drilling and shearing of 1500 MPa martensite is impractical.
Can 22MnB5-ANN be welded?
Yes — weldability is rated very good (70/100). Resistance spot welding is standard (Al-Si coated requires adapted current/force schedules; Zn coating risks liquid-metal embrittlement); laser welding of Al-Si blanks needs coating ablation at the joint, and any welding softens the martensite in the HAZ.
What surface finishes work on 22MnB5-ANN?
Al-Si coated parts go straight to phosphate-free pretreatment and e-coat; uncoated hot-stamped parts must be shot blasted to remove scale, and electroplating/acid pickling should be avoided due to hydrogen embrittlement risk.
Can 22MnB5-ANN be formed, bent or molded?
Direct hot stamping: austenitize 900–950 °C for 3–6 min, transfer in <10 s, form and hold in the water-cooled die at >27 °C/s cooling to full martensite; cold forming is limited to the soft delivered state and bend radii after hardening should be ≥3–4 t.
What is the maximum service temperature of 22MnB5-ANN?
22MnB5-ANN is rated for continuous use to about 250°C (482 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 22MnB5-CR and 22MnB5-PHS?
CR is the default condition — standard soft blank stock for direct hot stamping and for cold blanking/piercing before the press-hardening line. PHS: the in-service condition of hot-stamped B-pillars, bumper beams and roof rails — maximum strength, minimum springback, very low ductility. Yield strength is 380 MPa in CR versus 1,100 MPa in PHS.
Can FabDigit make parts in 22MnB5-ANN?
Yes — 22MnB5-ANN is available for sheet metal; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- EN 10083-3 — Steels for quenching and tempering: alloy steels (1.5528 / 22MnB5) — CEN (2006)
- VDA 239-100 — Sheet steel for cold forming / press hardening steels — VDA (2016)
- Usibor 1500 / press hardenable steels product data — ArcelorMittal (2023)
- MBW 1500 press-hardening steel datasheet — thyssenkrupp Steel (2022)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
- Hot Stamping of Ultra High Strength Steels (Karbasian & Tekkaya review data) — Elsevier / Springer (2010)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.