BS 970 (Part 3):1991 216M36 Steel: Specifications & Listings

Maximum unless a range is stated.

Source: BS 970 (Part 3):1991, Table 12

Condition	Reference symbol	Size (mm)	Tensile strength Rm (MPa)	Yield Re, min (MPa)	Elongation, min (%)	Impact Izod, min (J)	Impact KCV, min (J)	Rp0.2, min (MPa)	Hardness HB	Notes
Hot rolled + cold drawn or hot rolled + cold drawn + ground		≥ 6 < 13	680 min.	530	6	—	—	510	—
Hot rolled + cold drawn or hot rolled + cold drawn + ground		> 13 ≤ 16	650 min.	510	7	—	—	487	—
Hot rolled + cold drawn or hot rolled + cold drawn + ground		> 16 ≤ 40	620 min.	480	7	—	—	434	—
Hot rolled + cold drawn or hot rolled + cold drawn + ground		> 40 ≤ 63	600 min.	460	8	—	—	372	—
Hot rolled + cold drawn or hot rolled + cold drawn + ground		> 63 ≤ 76	570 min.	420	9	—	—	353	—
Hardened and tempered + turned or ground	P	≥ 6 < 100	550-700	340	20	34	28	310	152-207
Hardened and tempered + turned or ground	Q	> 6 ≤ 63	625-775	400	18	34	28	370	179-229
Hardened and tempered + turned or ground	R	> 6 ≤ 29	700-850	480	16	34	28	450	201-255
Hardened and tempered + cold drawn or hardened and tempered + cold drawn + ground	P	≥ 29 < 100	550-700	380	15	34	—	340	152-207
Hardened and tempered + cold drawn or hardened and tempered + cold drawn + ground	Q	> 13 ≤ 63	625-775	440	13	34	—	400	179-229
Hardened and tempered + cold drawn or hardened and tempered + cold drawn + ground	R	> 6 ≤ 29	700-850	520	12	34	—	470	201-255

Condition letters P to Z are the tensile strength ranges of Table 29. Rp0.2 applies when specifically ordered (note 3). Hardness HB is for guidance only except in the softened condition (note 13). Impact: Izod, or KCV when the standard impact test is not required (option A.3).

Source: BS 970 (Part 3):1991, Table 19

Normalizing, hardening and tempering temperatures as given in Tables 27 and 28 (clause 4.2); Table 22 hardening temperatures for case hardening steels.

Source: BS 970 (Part 3):1991, Table 28