项目 残余元 Reh Rm A S Z A KV A KU 硬度
牌号
素总量
(%) (MPa) (MPa) (MPa)
(%
)
(J) (J) (HB)
ZG 200-400 ≤0.20 ≤0.60 ≤0.80 ≤0.035 ≤0.035 ≤0.40 ≤0.35 ≤0.40 ≤0.20 ≤0.05 ≤1.00
正火或
退火
200 400 25 40 30 47 —
GB/T 11352-
2009
ZG 230-450 ≤0.30 ≤0.60 ≤0.90 ≤0.035 ≤0.035 ≤0.40 ≤0.35 ≤0.40 ≤0.20 ≤0.05 ≤1.00
正火或
退火
230 450 22 32 25 35 —
GB/T 11352-
2009
ZG 270-500 ≤0.40 ≤0.60 ≤0.90 ≤0.035 ≤0.035 ≤0.40 ≤0.35 ≤0.40 ≤0.20 ≤0.