Gun steel PCr2NiMo
2026-08-17 15:57:52 Origin： Remark：0 Click：
GJB 5207 Specification for alloy steel forgings of cannon barrel parts PCr2NiMo round bar, plate ESR remelting process PCr2NiMo hot forged, rolled, cold finished
TECHNICAL DATA SHEET - PCr2NiMo
Technical standard: GJB 5207 - 2003
Usage: 130,152, 155 gun breech, gun barrelStock available: round bar, hollow bar, forging block
PROFILES AND DIMENSIONS
Rod & round bar & disc (diameter): 6.0 ~ 900 mm
Square bar & flat bar: 10 ~ 600 mm
Forging: T15 ~ 500 X W 50 ~ 800 X L mm
TYPICAL CHEMICAL COMPOSITIONS (mass fraction - %)
Carbon, C (％): 0.32 ~ 0.42
Silicon, Si (％): 0.17 ~ 0.37
Manganese, Mn (％): 0.25 ~ 0.50
Phosphorus, P (％): ≤ 0.025
Sulfur, S (％): ≤ 0.020
Chromium, Cr (％): 2.20 ~ 2.60
Nickel, Ni (％): 1.00 ~ 1.30
Molybdenum, Mo (％): 0.20 ~ 0.30
Vanadium, V (%): -
Ferrum, Fe (%): remainder.MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT
Heat treatment temperature / ℃ | annealing: -.
Heat treatment temperature / ℃ | normalizing:
Heat treatment temperature / ℃ | quenching: 880
Heat treatment temperature / ℃ | tempering : 510
Hardness after annealing, ≤ HB: -
Limit of proportionality: 540 / 590 Mpa
Elongation, A5 ≥ (%): 35.0Impact strength, AKv ≥ J: 17
Limit of proportionality: 635 / 685 / 735 / 785 Mpa
Elongation, A5 ≥ (%): 30.0Impact strength, AKv ≥ J: 15
Limit of proportionality: 835 / 885 / 930 Mpa
Elongation, A5 ≥ (%): 25.0Impact strength, AKv ≥ J: 15
Hardness after final heat treatment / HB: -
PRODUCT DESCRIPTION
PCr2NiMo is usually produced by EAF + VD + LF / BEF followed by electroslag refining (ESR) if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different level according to the buyers' requirements.
Bars are usually supplied black in the annealed condition.
Final heat treatment: normalized + quenched + tempered.
TECHNICAL SALES ASSISTANCE & SERVICE
20+ years focus on special steel manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
We closely cooperate with the professional inspection partners to strictly control the quality and improve the quality manage system, and guarantee the goods delivery each time. It is proved that we are worth of trusting and will be the strategic partner of the supplying chains in the special steels field.
PRODUCT DESCRIPTION
PCr2NiMo is usually produced by EAF + VD + LF / BEF followed by electroslag refining (ESR) if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different level according to the buyers' requirements.
Bars are usually supplied black in the annealed condition.
Final heat treatment: normalized + quenched + tempered.
TECHNICAL SALES ASSISTANCE & SERVICE
20+ years focus on special steel manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
We closely cooperate with the professional inspection partners to strictly control the quality and improve the quality manage system, and guarantee the goods delivery each time. It is proved that we are worth of trusting and will be the strategic partner of the supplying chains in the special steels field.
10705BU, 10705MBU, 10705AJ, S132, S131, S111, S159, S154
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